subject:(SPE)

University of Minnesota

1. Swenson, Michael M. Rapid solid phase extraction of dissolved organic matter.

Degree: MS, Chemistry, 2014, University of Minnesota

► Dissolved organic matter (DOM) is a complex mixture of organic molecules found ubiquitously in freshwater and saltwater environments. Contained within the heterogeneous mixture of DOM… (more)

Subjects/Keywords: DOM; Extraction; Organic matter; SPE

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APA (6^th Edition):

Swenson, M. M. (2014). Rapid solid phase extraction of dissolved organic matter. (Masters Thesis). University of Minnesota. Retrieved from http://hdl.handle.net/11299/165633

Chicago Manual of Style (16^th Edition):

Swenson, Michael M. “Rapid solid phase extraction of dissolved organic matter.” 2014. Masters Thesis, University of Minnesota. Accessed July 16, 2019. http://hdl.handle.net/11299/165633.

MLA Handbook (7^th Edition):

Swenson, Michael M. “Rapid solid phase extraction of dissolved organic matter.” 2014. Web. 16 Jul 2019.

Vancouver:

Swenson MM. Rapid solid phase extraction of dissolved organic matter. [Internet] [Masters thesis]. University of Minnesota; 2014. [cited 2019 Jul 16]. Available from: http://hdl.handle.net/11299/165633.

Council of Science Editors:

Swenson MM. Rapid solid phase extraction of dissolved organic matter. [Masters Thesis]. University of Minnesota; 2014. Available from: http://hdl.handle.net/11299/165633

2. Adibe Georges khouri. ANÁLISE DE RESÍDUOS DE ATRAZINA E SIMAZINA EM ABACAXI NO ESTADO DE GOIÁS.

Degree: 2007, Universidade Católica de Goiás

URL: http://tede.biblioteca.ucg.br/tde_busca/arquivo.php?codArquivo=358

► A cultura do abacaxi sempre se destacou na fruticultura, graças não só às qualidades deste fruto, bastante apreciado em todo mundo, mas principalmente pela rentabilidade… (more)

Subjects/Keywords: gas chromatography, atrazine , simazine, SPE.; ECOLOGIA; cromatografia gasosa, atrazina, simazina, SPE.

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APA (6^th Edition):

khouri, A. G. (2007). ANÁLISE DE RESÍDUOS DE ATRAZINA E SIMAZINA EM ABACAXI NO ESTADO DE GOIÁS. (Thesis). Universidade Católica de Goiás. Retrieved from http://tede.biblioteca.ucg.br/tde_busca/arquivo.php?codArquivo=358

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

khouri, Adibe Georges. “ANÁLISE DE RESÍDUOS DE ATRAZINA E SIMAZINA EM ABACAXI NO ESTADO DE GOIÁS.” 2007. Thesis, Universidade Católica de Goiás. Accessed July 16, 2019. http://tede.biblioteca.ucg.br/tde_busca/arquivo.php?codArquivo=358.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

khouri, Adibe Georges. “ANÁLISE DE RESÍDUOS DE ATRAZINA E SIMAZINA EM ABACAXI NO ESTADO DE GOIÁS.” 2007. Web. 16 Jul 2019.

Vancouver:

khouri AG. ANÁLISE DE RESÍDUOS DE ATRAZINA E SIMAZINA EM ABACAXI NO ESTADO DE GOIÁS. [Internet] [Thesis]. Universidade Católica de Goiás; 2007. [cited 2019 Jul 16]. Available from: http://tede.biblioteca.ucg.br/tde_busca/arquivo.php?codArquivo=358.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

khouri AG. ANÁLISE DE RESÍDUOS DE ATRAZINA E SIMAZINA EM ABACAXI NO ESTADO DE GOIÁS. [Thesis]. Universidade Católica de Goiás; 2007. Available from: http://tede.biblioteca.ucg.br/tde_busca/arquivo.php?codArquivo=358

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Brno University of Technology

3. Scholzová, Kristýna. Použití extrakce tuhou fází pro frakcionaci lipidů v sýrové matrici .

Degree: 2016, Brno University of Technology

URL: http://hdl.handle.net/11012/58950

► Tématem této práce je metoda extrakce tuhou fází jako prostředek k zisku frakce volných mastných kyselin ze sýrové matrice pro následné stanovení pomocí plynové chromatografie… (more)

▼ Tématem této práce je metoda extrakce tuhou fází jako prostředek k zisku frakce volných mastných kyselin ze sýrové matrice pro následné stanovení pomocí plynové chromatografie s FID detekcí. Teoretická část zpracovává informace ohledně složení mléčného tuku a souvisejících procesech, které vedou ke vzniku senzoricky aktivních komponent, mezi něž se volné mastné kyseliny řadí. Hlavním tématem literární rešerše jsou možnosti stanovení mastných kyselin v sýrech se zaměřením na dosavadní poznatky o použití extrakce tuhou fází k tomuto účelu. Expermentální část se zabývá nalezením vhodných parametrů a podmínek pro použití extrakce tuhou fází k frakcionaci lipidů na kolonách se zakotvenou aminopropylovou fází. Pro separaci lipidů byly použity kolony Agilent SampliQ Amino a pomocí vhodných směsí rozpouštědel byly eluovány frakce lipidů. Čistota a složení získaných frakcí byly ověřovány kombinací plynové a tenkovrstvé chromatografické techniky. Pro převedení mastných kyselin na methylestery ke stanovení plynovou chromatografií byly použity postupy podle normy ČSN EN ISO 12966-2. Součástí vyhodnocení jsou, mimo diskusi o vhodných experimentálních podmínkách, závěry ohledně optimálních množství vzorku a elučních činidel. Výsledky této práce jsou vhodným podkladem pro navazující optimalizační experimenty a následné zařazení validované metody do procesu stanovení volných mastných kyselin.; This bachelor thesis deals with Solid Phase Extraction, as a method for isolation of free fatty acids from cheese matrix to be subsequently determined using gas chromatography with FID detection. The theoretical part provides information about milk fat composition and related reactions being a source of flavour compounds, free fatty acids including. The main objective of the theoretical research is to summarize alternatives to determining fatty acids in cheese, focusing on current advancement and use of Solid Phase Extraction for this purpose. The practical part discovers proper technique and conditions for fractionation of lipids by Solid Phase Extraction, using aminopropyl bonded phase columns. Agilent SampliQ Amino columns were utilized to separate lipid mixture and different lipid classes were eluted using suitable organic solvents. Composition and purity of lipid extracts were verified combining thin layer chromatography and gas chromatography. Before being determined by gas chromatography, free fatty acids were converted into methylesters, based on ČSN EN ISO 12966-2. Besides discussing proper experimental conditions, the assesment also comes with solving optimal volumes of sample and eluting solvents to apply. The results of this thesis are considered to be useful base for subsequent experimental optimization and following integration of validated method into process of determining free fatty acids. Advisors/Committee Members: Vítová, Eva (advisor).

Subjects/Keywords: sýry; GC; MK; SPE; cheese; GC; FA; SPE

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Scholzová, K. (2016). Použití extrakce tuhou fází pro frakcionaci lipidů v sýrové matrici . (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/58950

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Scholzová, Kristýna. “Použití extrakce tuhou fází pro frakcionaci lipidů v sýrové matrici .” 2016. Thesis, Brno University of Technology. Accessed July 16, 2019. http://hdl.handle.net/11012/58950.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Scholzová, Kristýna. “Použití extrakce tuhou fází pro frakcionaci lipidů v sýrové matrici .” 2016. Web. 16 Jul 2019.

Vancouver:

Scholzová K. Použití extrakce tuhou fází pro frakcionaci lipidů v sýrové matrici . [Internet] [Thesis]. Brno University of Technology; 2016. [cited 2019 Jul 16]. Available from: http://hdl.handle.net/11012/58950.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Scholzová K. Použití extrakce tuhou fází pro frakcionaci lipidů v sýrové matrici . [Thesis]. Brno University of Technology; 2016. Available from: http://hdl.handle.net/11012/58950

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Tasmania

4. Adamczewski, J. The Hoard: Paged virtual memory for the Cell BE SPE.

Degree: 2011, University of Tasmania

URL: https://eprints.utas.edu.au/11726/1/Adamczewski_thesis-pdf.pdf

► The hoard is a paged virtual memory system for program data designed for the Cell Broadband Engine processor (Cell BE). The hoard makes it easier… (more)

▼ The hoard is a paged virtual memory system for program data designed for the Cell Broadband Engine processor (Cell BE). The hoard makes it easier to utilise the performance available from the processor’s Synergistic Processor Elements (SPEs). Traditional highperformance hardware cache designs are not well-suited to being implemented in software on the Cell BE architecture, so the hoard takes advantage of the SPE’s wide registers to implement a multi-level page table. This permits fast, fully associative lookup into a dynamically-sized collection of data pages. Write-back of all pages is performed (not just those modified) and a first-in first-out page replacement method is used. This design is compared with the software cache provided with the IBM SDK for Multicore Acceleration — a fixed-size, four-way set associative design, using a traditional hardware approach — through extensive experiments with a diverse range of benchmarks. An in-depth analysis is made of the performance of the hoard design, addressing its strengths and shortcomings. From this analysis, potential improvements to the hoard are considered, implemented, and their relative benefits measured. Changes include the tracking of page modification, pre-writing of pages, use of a write-through policy, pre- and partial-fetching of pages, and alternative replacement algorithms. Results show that simple and speculative methods are often the most beneficial, and that performance varies greatly depending on the memory access patterns of a particular program. It was found that programs with high locality of access will perform better when using the hoard, in some cases exceeding the performance of the same program running on the Power Processor Element of the Cell BE. For programs with lower locality of reference, performance of the hoard and SDK cache are within a few percent of one another. An additional design goal for the hoard is to make the access and management of data outside of the SPE’s local store as transparent as possible to the programmer. Not implemented as part of a particular compiler, the hoard is a compile- and run-time library that makes use of C++ language features to provide a natural pointer interface, requiring a minimal amount of changes to existing programs. Careful implementation of the interface ensures that program semantics are well preserved and accidental misuse is discouraged, while taking advantage of the features of the Cell BE to provide high-speed lookup. The result is a tool that facilitates the reuse of a broad range of existing code-bases on the SPE.

Subjects/Keywords: CellBE; SPE; software cache; virtual memory

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APA (6^th Edition):

Adamczewski, J. (2011). The Hoard: Paged virtual memory for the Cell BE SPE. (Thesis). University of Tasmania. Retrieved from https://eprints.utas.edu.au/11726/1/Adamczewski_thesis-pdf.pdf

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Adamczewski, J. “The Hoard: Paged virtual memory for the Cell BE SPE.” 2011. Thesis, University of Tasmania. Accessed July 16, 2019. https://eprints.utas.edu.au/11726/1/Adamczewski_thesis-pdf.pdf.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Adamczewski, J. “The Hoard: Paged virtual memory for the Cell BE SPE.” 2011. Web. 16 Jul 2019.

Vancouver:

Adamczewski J. The Hoard: Paged virtual memory for the Cell BE SPE. [Internet] [Thesis]. University of Tasmania; 2011. [cited 2019 Jul 16]. Available from: https://eprints.utas.edu.au/11726/1/Adamczewski_thesis-pdf.pdf.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Adamczewski J. The Hoard: Paged virtual memory for the Cell BE SPE. [Thesis]. University of Tasmania; 2011. Available from: https://eprints.utas.edu.au/11726/1/Adamczewski_thesis-pdf.pdf

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of the Western Cape

5. Felix, Cecil. Iridium based mixed oxides as efficient anode catalysts for Solid Polymer Electrolyte (SPE) electrolysers .

Degree: 2010, University of the Western Cape

URL: http://hdl.handle.net/11394/3553

► The objective of the thesis is to develop highly efficient catalysts for solid polymer electrolyte (SPE) electrolyser anodes.The anode is the primary cause of the… (more)

▼ The objective of the thesis is to develop highly efficient catalysts for solid polymer electrolyte (SPE) electrolyser anodes.The anode is the primary cause of the large overpotential of SPE electrolysers and also adds significantly to the cost of the electrolysers. Currently, unsupported IrO2 is a widely used anode catalyst as it exhibits the best stability during the oxygen evolution reaction. The activity of IrO2 needs to be improved significantly to address the high cost and efficiency issues of the SPE electrolyser. Developments aimed at improving the activity of unsupported IrO2 are however limited due to the limitations of the wellknown supports under the operating conditions of electrolysers, leading to their oxidation.In this study binary metal oxides based on IrO2 were developed and optimized as anode catalysts for the SPE electrolyser and compared to the ‘state-of-art’ commercial IrO2 catalyst. The Adams fusion method was adapted and used to synthesize the catalysts.The activities of the catalysts were determined using half-cell studies. Optimum conditions for the preparation of unsupported IrO2 catalysts were found to be 350 °C and 2 hours. The resulting catalysts had twice the activity of the ‘state-of-art’ commercial IrO2 catalyst. Secondary metals were carefully selected, after carrying out both a literature study and an experimental study. Binary metal oxides were then developed using the optimum synthesis conditions. Four binary metal oxides were studied to identify the best/most efficient catalyst for electrolysis. The catalysts were characterized using XRD, TEM, SEM and EDS analyses, in efforts to understand and correlate the activity of the catalysts to its physical properties and obtain information that could be useful for the further development of efficient catalysts.Although all the binary metal oxides studied showed improved activity compared to IrO2, the catalytic activity of Ir0.7Ru0.3O2 was found to be significantly better than the commercial catalyst: it was over 5 times more active than the ‘state-of-art’ commercial IrO2 catalyst. Ir-Pd mixed oxides also proved to be highly efficient as anode catalysts for SPE electrolysers. Advisors/Committee Members: Linkov, Vladimir M (advisor), Pasupathi, Sivakumar (advisor).

Subjects/Keywords: Catalysts; Solid Polymer Electrolyte (SPE); Anode

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APA (6^th Edition):

Felix, C. (2010). Iridium based mixed oxides as efficient anode catalysts for Solid Polymer Electrolyte (SPE) electrolysers . (Thesis). University of the Western Cape. Retrieved from http://hdl.handle.net/11394/3553

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Felix, Cecil. “Iridium based mixed oxides as efficient anode catalysts for Solid Polymer Electrolyte (SPE) electrolysers .” 2010. Thesis, University of the Western Cape. Accessed July 16, 2019. http://hdl.handle.net/11394/3553.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Felix, Cecil. “Iridium based mixed oxides as efficient anode catalysts for Solid Polymer Electrolyte (SPE) electrolysers .” 2010. Web. 16 Jul 2019.

Vancouver:

Felix C. Iridium based mixed oxides as efficient anode catalysts for Solid Polymer Electrolyte (SPE) electrolysers . [Internet] [Thesis]. University of the Western Cape; 2010. [cited 2019 Jul 16]. Available from: http://hdl.handle.net/11394/3553.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Felix C. Iridium based mixed oxides as efficient anode catalysts for Solid Polymer Electrolyte (SPE) electrolysers . [Thesis]. University of the Western Cape; 2010. Available from: http://hdl.handle.net/11394/3553

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

6. Leonco, Daniel, siao-Loung. Développement méthodologique pour l'analyse d'une large gamme de composés dans le milieux aquatiques : Methodological development for the analysis of a wide range of compounds in the aquatic environments.

Degree: Docteur es, Chimie analytique et environnementale, 2017, Bordeaux

URL: http://www.theses.fr/2017BORD0809

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Il est maintenant avéré que les contaminants présents dans les milieux aquatiques peuvent être toxiques à l’état de traces voire d’ultra traces. Il est donc… (more)

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Il est maintenant avéré que les contaminants présents dans les milieux aquatiques peuvent être toxiques à l’état de traces voire d’ultra traces. Il est donc important de développer des méthodes d’analyse performantes et sensibles pouvant atteindre ces niveaux de concentration. Dans cette optique, les techniques chromatographiques couplées à la spectrométrie de masse (GC-MS et LC-MS/MS) sont généralement utilisées pour l’analyse des polluants organiques. Les composés présents dans les milieux aquatiques possèdent des propriétés physico-chimiques très variées, d’apolaires à très polaires. Ainsi, développer une analyse simultanée pour toutes ces molécules représente un challenge analytique. Dans ce travail de thèse, plusieurs étapes du processus analytique ont été évaluées : la préparation de l’échantillon par extraction sur phase solide (SPE), la séparation par chromatographie et la détection par spectrométrie de masse. Une liste de composés modèles couramment retrouvés dans les milieux aquatiques a été établie pour conduire ces essais. Les méthodes d’extraction en phase solide hors ligne et en ligne ont été développées dans une optique d’analyse multirésidus à un niveau de traces. Les méthodes chromatographiques, gazeuse et liquide, couplées à la spectrométrie de masse ont été étudiées pour favoriser une analyse exhaustive et sensible. La dernière partie a consisté à appliquer les méthodes développées pour une approche d’analyse non ciblée.

It is now widely recognized that contaminants present in aquatic environments can be toxic at traces or even ultra-traces level. Therefore, it is important to develop efficient and sensitive analytical methods to reach these levels of concentration. In that respect, chromatographic techniques coupled to mass spectrometry (GC-MS and LC-MS / MS) are commonly used for the analysis of organic pollutants. The substances encountered in aquatic environments display a large range of physico-chemical properties, from apolar to very polar. Thus, developing a simultaneous analysis for all these molecules represents an analytical challenge. In this pHD work, several steps of the analytical process have been investigated: sample preparation by solid phase extraction (SPE), chromatographic separation and the detection by mass spectrometry. A list of model compounds commonly determined in aquatic environments was established to conduct the tests. Solid phase extraction methods, offline and online, were developed in a multiresidue analysis aim at traces level. Chromatographic methods, gaseous and liquid, coupled to mass spectrometry were studied to obtain an exhaustive and sensitive analysis. The last part consisted to apply the developed methods for a non-targeted analysis approach.

Advisors/Committee Members: Budzinski, Hélène (thesis director), Lestremau, François (thesis director).

Subjects/Keywords: SPE hors ligne; SPE en ligne; LC-QqQ; LC-QTOF; GC-MS; Offline SPE; Online SPE; LC-QqQ; LC-QTOF; GC-MS

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Leonco, Daniel, s. (2017). Développement méthodologique pour l'analyse d'une large gamme de composés dans le milieux aquatiques : Methodological development for the analysis of a wide range of compounds in the aquatic environments. (Doctoral Dissertation). Bordeaux. Retrieved from http://www.theses.fr/2017BORD0809

Chicago Manual of Style (16^th Edition):

Leonco, Daniel, siao-Loung. “Développement méthodologique pour l'analyse d'une large gamme de composés dans le milieux aquatiques : Methodological development for the analysis of a wide range of compounds in the aquatic environments.” 2017. Doctoral Dissertation, Bordeaux. Accessed July 16, 2019. http://www.theses.fr/2017BORD0809.

MLA Handbook (7^th Edition):

Leonco, Daniel, siao-Loung. “Développement méthodologique pour l'analyse d'une large gamme de composés dans le milieux aquatiques : Methodological development for the analysis of a wide range of compounds in the aquatic environments.” 2017. Web. 16 Jul 2019.

Vancouver:

Leonco, Daniel s. Développement méthodologique pour l'analyse d'une large gamme de composés dans le milieux aquatiques : Methodological development for the analysis of a wide range of compounds in the aquatic environments. [Internet] [Doctoral dissertation]. Bordeaux; 2017. [cited 2019 Jul 16]. Available from: http://www.theses.fr/2017BORD0809.

Council of Science Editors:

Leonco, Daniel s. Développement méthodologique pour l'analyse d'une large gamme de composés dans le milieux aquatiques : Methodological development for the analysis of a wide range of compounds in the aquatic environments. [Doctoral Dissertation]. Bordeaux; 2017. Available from: http://www.theses.fr/2017BORD0809

7. Salazar, Vania Cristina Rodríguez. Desenvolvimento de métodos analíticos por cromatografia gasosa acoplada à espectrometria de massas para a identificação e quantificação de anatoxina-A em amostras de água e florações algais.

Degree: Mestrado, Toxicologia e Análises Toxicológicas, 2007, University of São Paulo

URL: http://www.teses.usp.br/teses/disponiveis/9/9141/tde-07022007-163018/ ;

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A poluição dos corpos d\'água é de grande preocupação mundial, pois a maioria da população utiliza a água doce de reservatórios, represas ou rios como… (more)

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A poluição dos corpos d\'água é de grande preocupação mundial, pois a maioria da população utiliza a água doce de reservatórios, represas ou rios como principal fonte de água potável. A presença no Brasil de florações de cianobactérias capazes de produzir anatoxina-a, revela a necessidade de métodos simples e rápidos que permitam sua detecção e monitoramento. Neste trabalho foram desenvolvidos, otimizados e validados dois métodos analíticos por GC/MS para identificação e quantificação de anatoxina-a em amostras de água e florações, respectivamente. A norcocaína foi usada como padrão interno em ambos os métodos. Os íons escolhidos para serem monitorados foram (íons quantificadores sublinhados): anatoxina-a: 191,164, 293 e norcocaína: 195, 136, 168. As curvas de calibração dos métodos mostraram-se lineares nas faixas de 2.5-200 ng.mL-1 e 13-250 ng.mg-1. Os limites de detecção obtidos foram 2 ng.mL-1 e 10 ng.mg-1. Os métodos demonstraram sensibilidade e especificidade adequada para seu uso no monitoramento ambiental da anatoxina-a.

The water pollution is a big concern around the world, since the most of cities use freshwater reservoirs, dams or rivers as the main drinking water suppliers. Cyanobacterial blooms capable to produce anatoxin-a are regularly present in Brazilian waters. Therefore, there is a necessity of simple and rapid analytical methods to monitor this cyanotoxin. In the present work, two analytical methods by GC/MS for identification and quantification of anatoxin-a in water and algae bloom samples were developed, optimized and validated. Norcocaine was used as internal standard in both methods. The ions chosen to be monitorated were (quantification ions underlined): anatoxin-a 191, 164, 293 and norcocaine: 195, 136, 168. Both method calibration curves showed linearity in the ranges of: 2.5-200 ng.mL-1 and 13-250 ng.mg-1. The obtained limit of detection were: 2 ng.mL-1 and 10 ng.mg-1. The methods showed sensitivity and specificity enough to be used routinely as a tool for anatoxin-a monitoring.

Advisors/Committee Members: Pinto, Ernani.

Subjects/Keywords: Anatoxin-a; Anatoxina-a; GC/MS; GC/MS; SPE; SPE; SPME; SPME

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APA (6^th Edition):

Salazar, V. C. R. (2007). Desenvolvimento de métodos analíticos por cromatografia gasosa acoplada à espectrometria de massas para a identificação e quantificação de anatoxina-A em amostras de água e florações algais. (Masters Thesis). University of São Paulo. Retrieved from http://www.teses.usp.br/teses/disponiveis/9/9141/tde-07022007-163018/ ;

Chicago Manual of Style (16^th Edition):

Salazar, Vania Cristina Rodríguez. “Desenvolvimento de métodos analíticos por cromatografia gasosa acoplada à espectrometria de massas para a identificação e quantificação de anatoxina-A em amostras de água e florações algais.” 2007. Masters Thesis, University of São Paulo. Accessed July 16, 2019. http://www.teses.usp.br/teses/disponiveis/9/9141/tde-07022007-163018/ ;.

MLA Handbook (7^th Edition):

Salazar, Vania Cristina Rodríguez. “Desenvolvimento de métodos analíticos por cromatografia gasosa acoplada à espectrometria de massas para a identificação e quantificação de anatoxina-A em amostras de água e florações algais.” 2007. Web. 16 Jul 2019.

Vancouver:

Salazar VCR. Desenvolvimento de métodos analíticos por cromatografia gasosa acoplada à espectrometria de massas para a identificação e quantificação de anatoxina-A em amostras de água e florações algais. [Internet] [Masters thesis]. University of São Paulo; 2007. [cited 2019 Jul 16]. Available from: http://www.teses.usp.br/teses/disponiveis/9/9141/tde-07022007-163018/ ;.

Council of Science Editors:

Salazar VCR. Desenvolvimento de métodos analíticos por cromatografia gasosa acoplada à espectrometria de massas para a identificação e quantificação de anatoxina-A em amostras de água e florações algais. [Masters Thesis]. University of São Paulo; 2007. Available from: http://www.teses.usp.br/teses/disponiveis/9/9141/tde-07022007-163018/ ;

8. Grossi, Paula. Desenvolvimento e aplicação de técnicas miniaturizadas de preparo de amostras para análises ambientais via GC-MS.

Degree: PhD, Química Analítica, 2009, University of São Paulo

URL: http://www.teses.usp.br/teses/disponiveis/75/75132/tde-07102009-103813/ ;

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Este trabalho apresenta o desenvolvimento e aplicação de técnicas miniaturizadas de preparo de amostras para análises ambientais via GC-MS. Dentre elas aplicou-se a técnica de… (more)

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Este trabalho apresenta o desenvolvimento e aplicação de técnicas miniaturizadas de preparo de amostras para análises ambientais via GC-MS. Dentre elas aplicou-se a técnica de Extração em Fase Sólida (SPE) na análise do regulador de crescimento de plantas, paclobutrazol (PBZ), em amostras de solo. Um método foi desenvolvido, otimizado e validado para o emprego da técnica acoplada à cromatografia gasosa e espectrometria de massas (GC-MS) na análise de PBZ em solo. Foram desenvolvidas também barras in-house, para Extração por Sorção em Barras de Agitação (SBSE), preparadas com PDMS, otimizadas, validadas e aplicadas na extração de pesticidas organoclorados no modo headspace acoplado a GC-MS. Adicionalmente, novos recobrimentos para SBSE a partir da modificação do PDMS comumente utilizado visando mudanças nas características de polaridade das fases sortivas foram desenvolvidos. Seguindo a tendência de miniaturização desenvolveu-se um novo sistema nomeado de Extração Sortiva Refrigerada (RSE), a qual considera a teoria de equilíbrio da HSSE e da SPME refrigerada. A técnica foi otimizada e aplicada em amostras de água do rio de Atibaia, coletadas na região de Paulínia-SP.

This study describes the development and application of different miniaturized sample preparation techniques for environmental analysis via gas chromatography and mass spectrometry (GC-MS). Among those techniques, the Solid Phase Extraction (SPE) was applied to the analysis of plant growth regulator, called paclobutrazol (PBZ), in soil samples. A method was developed, optimized and validated for the application of the technique coupled to GC-MS for the analysis of PBZ in soil. In-house Stir Bar Sorptive Extraction (SBSE) was also developed, optimized, validated and applied to organochlorine pesticides extraction in water samples in headspace mode followed by GC-MS. Additionally, new coatings for SBSE based on the PDMS modification commonly used to change the polarity characteristics of the sorptive phases were developed. Following the miniaturization trend, a new system called Refrigerated Sorptive Extraction (RSE) was successfully developed. This system was built with similar refrigerated SPME and HSSE equilibrium. Such technique was optimized and applied on water samples from Atibaia´s river, collected in the region of Paulínia-SP.

Advisors/Committee Members: Lanças, Fernando Mauro.

Subjects/Keywords: Extração; Extraction; GC-MS; GC-MS; RSE; RSE; SBSE; SBSE; Sorptive; Sortiva; SPE; SPE

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Grossi, P. (2009). Desenvolvimento e aplicação de técnicas miniaturizadas de preparo de amostras para análises ambientais via GC-MS. (Doctoral Dissertation). University of São Paulo. Retrieved from http://www.teses.usp.br/teses/disponiveis/75/75132/tde-07102009-103813/ ;

Chicago Manual of Style (16^th Edition):

Grossi, Paula. “Desenvolvimento e aplicação de técnicas miniaturizadas de preparo de amostras para análises ambientais via GC-MS.” 2009. Doctoral Dissertation, University of São Paulo. Accessed July 16, 2019. http://www.teses.usp.br/teses/disponiveis/75/75132/tde-07102009-103813/ ;.

MLA Handbook (7^th Edition):

Grossi, Paula. “Desenvolvimento e aplicação de técnicas miniaturizadas de preparo de amostras para análises ambientais via GC-MS.” 2009. Web. 16 Jul 2019.

Vancouver:

Grossi P. Desenvolvimento e aplicação de técnicas miniaturizadas de preparo de amostras para análises ambientais via GC-MS. [Internet] [Doctoral dissertation]. University of São Paulo; 2009. [cited 2019 Jul 16]. Available from: http://www.teses.usp.br/teses/disponiveis/75/75132/tde-07102009-103813/ ;.

Council of Science Editors:

Grossi P. Desenvolvimento e aplicação de técnicas miniaturizadas de preparo de amostras para análises ambientais via GC-MS. [Doctoral Dissertation]. University of São Paulo; 2009. Available from: http://www.teses.usp.br/teses/disponiveis/75/75132/tde-07102009-103813/ ;

Vytautas Magnus University

9. Čirvidas, Mindaugas. Popiežiaus Benedikto XVI enciklikos "Spe Salvi" praktinio pritaikomumo teorinės galimybės šiuolaikinės Lietuvos visuomenėje.

Degree: Master, Theology, 2011, Vytautas Magnus University

URL: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2011~D_20110622_153021-14122 ;

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Šiais laikais ne tik Lietuvoje, bet ir pasaulyje yra juntama vilties stygiaus problema. Šiame darbe yra nagrinėjama vilties trukumo problema, remiantis popiežiaus Benedikto XVI enciklika… (more)

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Šiais laikais ne tik Lietuvoje, bet ir pasaulyje yra juntama vilties stygiaus problema. Šiame darbe yra nagrinėjama vilties trukumo problema, remiantis popiežiaus Benedikto XVI enciklika „Spe Salvi“. Čia išryškinama ne tik vilties trūkumo priežastys, bet taip pat svarstomos ir ugdymo galimybės. Pirmojoje šio darbo dalyje yra nagrinėjama vilties teologija, remiantis enciklika „Spe Salvi“. Čia yra paryškinama keletą bruožų, kas būdinga vilčiai. Pirmiausiai, viltis yra į ateitį nukreipta. Bet ji svarbi yra ir dabarčiai. Taip pat labai svarbus vilties gelbėjantis pobūdis. Ir pirmame skyriuje taip pat pateikiama keletas pavyzdžių, kaip viltis gelbėja. Bet bene svarbiausia, kad tikroji viltis yra tik Dieve. Antroje dalyje apžvelgiama beviltiškumo priežastys Lietuvoje. Kas Lietuvos žmonėms trukdo stipresniam vilties reiškimuisi. Nemažai antropologinių žaizdų yra Lietuvoje, kurių šaknis būtų galima įvardinti vilties stoka. Mūsų tautoje yra įsišakniję alkoholizmas, esame viena iš pirmaujančių valstybių pagal savižudybių skaičių. Trečioje dalyje buvo praktiškai pamėginta pritaikyti Benedikto XVI enciklikoje siūlomi vilties ugdymo kriterijai. Popiežius siūlo, maldą, kančią, veiklumą ir iniciatyvos skatinimą, bei teismą, kaip vilties ugdymo galimybes. Tas buvo mėginta daryti, atsižvelgiant į šiandieninę Lietuvos situaciją, pasiremiant tyrimo metu gauta medžiaga.

Nowadays Lithuania, as well as the rest of the world faces the problem of the lack of hope. The current thesis explores the problem of the lack of hope and the possibilities for the cultivation of hope on the basis of Pope Benedict XVI’s encyclical Spe Salvi. Part One of the thesis analyses the theology of hope with a particular focus on the encyclical Spe Salvi. Although hope is directed towards the future, it is also vitally important in the present. Similarly significant is the redeeming character of hope. Chapter One provides some examples which disclose the redeeming character of hope. Yet, probably the most significant thing is that true hope can be found only in God. Part Two features the reasons for hopelessness in Lithuania with a particular focus on the obstacles that prevent any stronger expression of hope among the Lithuanians. Lithuanian people bear a considerable number of anthropological wounds the roots of which can be traced in the second Soviet occupation. Those wounds, those factors depriving people of hope lie in alcoholism and Lithuania’s top position in the list of world suicide rate. Part Three is an attempt to apply the criteria for the cultivation of hope as proposed in Benedict XVI’s encyclical Spe Salvi in the situation of the present day Lithuania. Pope offers prayer, suffering, activity, promotion of initiative and the Last Judgment as the fields for exercising hope.

Advisors/Committee Members: Kėvalas, Kęstutis (Master’s thesis supervisor), Skinkaitis, Rimas (Master’s thesis reviewer), Meilius, Kazimieras (Master’s degree committee chair).

Subjects/Keywords: Viltis; „Spe Salvi“; Malda; Kančia; Lietuva; Hope; Spe Salvi; Prayer; Suffering; Lithuania

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Čirvidas, Mindaugas. (2011). Popiežiaus Benedikto XVI enciklikos "Spe Salvi" praktinio pritaikomumo teorinės galimybės šiuolaikinės Lietuvos visuomenėje. (Masters Thesis). Vytautas Magnus University. Retrieved from http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2011~D_20110622_153021-14122 ;

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Chicago Manual of Style (16^th Edition):

Čirvidas, Mindaugas. “Popiežiaus Benedikto XVI enciklikos "Spe Salvi" praktinio pritaikomumo teorinės galimybės šiuolaikinės Lietuvos visuomenėje.” 2011. Masters Thesis, Vytautas Magnus University. Accessed July 16, 2019. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2011~D_20110622_153021-14122 ;.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

MLA Handbook (7^th Edition):

Čirvidas, Mindaugas. “Popiežiaus Benedikto XVI enciklikos "Spe Salvi" praktinio pritaikomumo teorinės galimybės šiuolaikinės Lietuvos visuomenėje.” 2011. Web. 16 Jul 2019.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Vancouver:

Čirvidas, Mindaugas. Popiežiaus Benedikto XVI enciklikos "Spe Salvi" praktinio pritaikomumo teorinės galimybės šiuolaikinės Lietuvos visuomenėje. [Internet] [Masters thesis]. Vytautas Magnus University; 2011. [cited 2019 Jul 16]. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2011~D_20110622_153021-14122 ;.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Council of Science Editors:

Čirvidas, Mindaugas. Popiežiaus Benedikto XVI enciklikos "Spe Salvi" praktinio pritaikomumo teorinės galimybės šiuolaikinės Lietuvos visuomenėje. [Masters Thesis]. Vytautas Magnus University; 2011. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2011~D_20110622_153021-14122 ;

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

10. Ruccella, Loredana. L’économiquement correct : analyse du discours euphémique sur la crise dans la presse française et italienne : Economically correct : analysis of euphemistic speech on economic crisis in French and Italian general press.

Degree: Docteur es, Sciences du langage, 2014, Université Paris X – Nanterre

URL: http://www.theses.fr/2014PA100033

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Notre recherche trouve sa raison d’être au cours de l’été 2007 lorsque le marché américain des prêts immobiliers hypothécaires - les désormais célèbres prêts subprimes,… (more)

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Notre recherche trouve sa raison d’être au cours de l’été 2007 lorsque le marché américain des prêts immobiliers hypothécaires - les désormais célèbres prêts subprimes, octroyés aux ménages en situation de difficulté financière et dont la capacité de remboursement était très faible, voire nulle - s’effondre en engendrant une crise très violente qui, en l’espace de quelques mois, s’étend au monde entier et frappe les secteurs les plus divers de la finance jusqu’à atteindre, comme il était prévisible, l’économie réelle. Confrontés à ces faits et inondés par une avalanche de mots identiques, de discours dangereusement uniformes, de solutions uniques étrangement partagées par tout le monde, nous avons été envahis par un sentiment de mécompréhension, de perplexité et de méfiance qui nous a incité à lire entre les lignes, à analyser, filtrer et interpréter l’information qui nous parvenait. Cette activité nous a permis de porter notre réflexion sur l’hypothèse que la presse diffuse un type de discours homogène, unique et standardisé se caractérisant par le recours à certaines techniques discursives permettant de soutenir le modèle économique néolibéral et d’orienter le lecteur vers une perception de la réalité économique façonnée à l’image de celui-ci. Nous appellerons ce discours, discours économiquement correct. Cette hypothèse sera vérifiée suite à l’analyse d’un ensemble d’articles issus des pages économiques de trois quotidiens français et de trois quotidiens italiens d’information générale et d’importance majeure : Le Monde, Libération, Le Figaro, La Stampa, La Repubblica et Il Corriere della Sera. Compte tenu de ces considérations, notre objectif sera celui d’analyser la manière dont la presse traite le problème de la crise et notre domaine de recherche sera celui des pages économiques de la presse générale ; nous serons donc confrontés à l’analyse d’un langage – ou plus exactement, d’un discours – de vulgarisation économique. Dans la première partie de notre travail – conçue comme un état des lieux de la problématique posée – nous introduirons les concepts clés de notre recherche. Nous approcherons donc ici les questions définitionnelles en proposant, dans un premier temps, une description historique retraçant les étapes principales du développement de l’euphémisme du Moyen Âge au XXIe siècle et, dans un deuxième temps, une réflexion autour du concept même d’euphémisme. Nous prêterons également attention à l’évolution du journalisme économique. La deuxième partie de notre travail fera donc l’objet d’une étude dont la problématique s’inscrit dans la volonté de préciser la nature du discours économiquement correct. La troisième partie de notre thèse se présentera comme une réflexion autour du caractère manipulatoire du discours économiquement correct.Dans la quatrième partie, nous élaborerons un outil lexicographique bilingue, répertoriant les substituts potentiellement euphémiques identifiés au cours de notre recherche.

The aim of this work is to study the way in which the euphemization of economic speech,…

Advisors/Committee Members: Jeandillou, Jean-François (thesis director), Marello, Carla (thesis director).

Subjects/Keywords: Euphémisme; SPE; Vulgarisation; Néolibéralisme; Crise; Économiquement correct; Euphemism; SPE; Vulgarization; Neoliberalism; Crisis; Economically correct; 410

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Ruccella, L. (2014). L’économiquement correct : analyse du discours euphémique sur la crise dans la presse française et italienne : Economically correct : analysis of euphemistic speech on economic crisis in French and Italian general press. (Doctoral Dissertation). Université Paris X – Nanterre. Retrieved from http://www.theses.fr/2014PA100033

Chicago Manual of Style (16^th Edition):

Ruccella, Loredana. “L’économiquement correct : analyse du discours euphémique sur la crise dans la presse française et italienne : Economically correct : analysis of euphemistic speech on economic crisis in French and Italian general press.” 2014. Doctoral Dissertation, Université Paris X – Nanterre. Accessed July 16, 2019. http://www.theses.fr/2014PA100033.

MLA Handbook (7^th Edition):

Ruccella, Loredana. “L’économiquement correct : analyse du discours euphémique sur la crise dans la presse française et italienne : Economically correct : analysis of euphemistic speech on economic crisis in French and Italian general press.” 2014. Web. 16 Jul 2019.

Vancouver:

Ruccella L. L’économiquement correct : analyse du discours euphémique sur la crise dans la presse française et italienne : Economically correct : analysis of euphemistic speech on economic crisis in French and Italian general press. [Internet] [Doctoral dissertation]. Université Paris X – Nanterre; 2014. [cited 2019 Jul 16]. Available from: http://www.theses.fr/2014PA100033.

Council of Science Editors:

Ruccella L. L’économiquement correct : analyse du discours euphémique sur la crise dans la presse française et italienne : Economically correct : analysis of euphemistic speech on economic crisis in French and Italian general press. [Doctoral Dissertation]. Université Paris X – Nanterre; 2014. Available from: http://www.theses.fr/2014PA100033

Brno University of Technology

11. Krůzová, Sabina. Stanovení nesteroidních protizánětlivých látek v odpadních vodách .

Degree: 2016, Brno University of Technology

URL: http://hdl.handle.net/11012/60336

► Tato práce se zabývá výskytem nesteroidních a protizánětlivých léčiv v odpadních vodách. Jsou zde charakterizována tato léčiva a uvedeny konkrétní způsoby stanovení naproxenu a ibuprofenu… (more)

Subjects/Keywords: Nesteroidní léčiva; odpadní voda; SPE; UHPLC; Non-steroidal anti-inflammatory drug (NSAID); waterwaste; SPE; UHPLC

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Krůzová, S. (2016). Stanovení nesteroidních protizánětlivých látek v odpadních vodách . (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/60336

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Krůzová, Sabina. “Stanovení nesteroidních protizánětlivých látek v odpadních vodách .” 2016. Thesis, Brno University of Technology. Accessed July 16, 2019. http://hdl.handle.net/11012/60336.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Krůzová, Sabina. “Stanovení nesteroidních protizánětlivých látek v odpadních vodách .” 2016. Web. 16 Jul 2019.

Vancouver:

Krůzová S. Stanovení nesteroidních protizánětlivých látek v odpadních vodách . [Internet] [Thesis]. Brno University of Technology; 2016. [cited 2019 Jul 16]. Available from: http://hdl.handle.net/11012/60336.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Krůzová S. Stanovení nesteroidních protizánětlivých látek v odpadních vodách . [Thesis]. Brno University of Technology; 2016. Available from: http://hdl.handle.net/11012/60336

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Brno University of Technology

12. Píšťková, Magdalena. Obsah rutinu ve vybraných odrůdách bezu černého .

Degree: 2011, Brno University of Technology

URL: http://hdl.handle.net/11012/8927

► Náplní diplomové práce bylo stanovení obsahu rutinu ve větvičkách a listech devatenácti odrůd bezu černého (Sambucus nigra L.) kapalinovou chromatografií. Dále bylo provedeno měření rutinu… (more)

▼ Náplní diplomové práce bylo stanovení obsahu rutinu ve větvičkách a listech devatenácti odrůd bezu černého (Sambucus nigra L.) kapalinovou chromatografií. Dále bylo provedeno měření rutinu v jeho významných zdrojích, routě a pohance. Naměřené hodnoty byly porovnány s významnými zdroji rutinu. Teoretická část popisuje bez černý, jeho obecné znaky, chemické složení, využití v lékařství. Další část je zaměřena na významné látky obsažené v bezu černém; flavonoidy. Jsou zde popsány extrakční techniky a vysokoúčinná kapalinová chromatografie. V praktické části byla pro získání látek z rostlinné matrice použita metoda extrakce stlačenou kapalnou horkou vodou (PHWE), která probíhala ve 3 cyklech po 5 minutách. Byla použita teplota 80°C, tlak 150 barů. Následovalo přečištění přes SPE kolonky a HPLC analýza s detekcí diodovým polem při vlnové délce 360 nm. Byla použita kolona SUPELCOSILTM LC-8DB, mobilní fáze MeOH:H2O:HCOOH v poměru 36:61,5:2,5 s průtokem 1 ml/min. Nejvíce rutinu bylo obsaženo v listech odrůdy Pregarten, 26,34 ± 0,50 mg/g. V listech bylo nejnižší množství rutinu stanoveno u odrůdy Körsör, a to 3,74 ± 0,13 mg/g. U větviček bylo nejvyšší množství rutinu stanoveno u odrůdy Samyl, kde bylo naměřeno 4,87 ± 0,01 mg/g rutinu, nejnižší množství bylo stanoveno u odrůdy Heidegg 13 s 0,56 ± 0,01 mg/g. Mez detekce pro rutin byla stanovena na 6,3 . 10-5 mg/ml a mez stanovitelnosti na 2,1 . 10-4 mg/ml.; The aim of this diploma thesis was to determine the rutin content in springs and leaves of 19 elderberry species (Sambucus nigra L.) with use of liquid chromatography. Furthermore the rutin content was determined in its significant sources – rue and buckwheat. The observed values were compared in order to answer the question whether it is useful to use the elderberry spring and leaves as a new source of rutin. Theoretical part of the thesis describes elderberry in general, its chemical composition and its usage in medicine. Following part concentrates on important substances contained in elderberry – flavonoids. Also principles of extraction techniques and HPLC are discussed. In practice the rutin was gained from plant matrix with use of pressurized hot water extraction (PHWE) which was performed in three five minutes long cycles. Conditions during the PHWE were set up to 80 °C and 150 bars. Obtained extract was purified with use of SPE columns and analyzed by HPLC with DAD detector (wave length – 360 nm). HPLC was performed with SUPELCOSILTMLC-8DB column. The mobile phase was composed of MeOH, H2O, and HCOOH in ration of 36:61,5:2,5. The set up flow of mobile phase was 1 ml/min. In the leaves the highest rutin content was determined in Pregarten – 26,34 ± 0,50 mg/g. On the other hand the lowest rutin content in leaves was determined in Körsör – 3,74 ± 0,13 mg/g. In springs the obtained results were as follow. The highest content was determined in Samyl – 4,87 ± 0,01 mg/g and the lowest content was determined in Heidegg 13 springs – 0,56 ± 0,01 mg/g. Also the HPLC detection limit – 6,3 . 10-5 mg/ml and quantitation limit –… Advisors/Committee Members: Vespalcová, Milena (advisor).

Subjects/Keywords: rutin; kvercetin; černý bez; SPE; PSE; PHWE; HPLC; rutin; quercetin; elderberry; SPE; PSE; PHWE; HPLC

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Píšťková, M. (2011). Obsah rutinu ve vybraných odrůdách bezu černého . (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/8927

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Píšťková, Magdalena. “Obsah rutinu ve vybraných odrůdách bezu černého .” 2011. Thesis, Brno University of Technology. Accessed July 16, 2019. http://hdl.handle.net/11012/8927.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Píšťková, Magdalena. “Obsah rutinu ve vybraných odrůdách bezu černého .” 2011. Web. 16 Jul 2019.

Vancouver:

Píšťková M. Obsah rutinu ve vybraných odrůdách bezu černého . [Internet] [Thesis]. Brno University of Technology; 2011. [cited 2019 Jul 16]. Available from: http://hdl.handle.net/11012/8927.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Píšťková M. Obsah rutinu ve vybraných odrůdách bezu černého . [Thesis]. Brno University of Technology; 2011. Available from: http://hdl.handle.net/11012/8927

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Brno University of Technology

13. Hornáková, Miroslava. Možnosti analytického stanovení volných mastných kyselin .

Degree: 2015, Brno University of Technology

URL: http://hdl.handle.net/11012/38303

► Tato diplomová práce se zabývá stanovením volných mastných kyselin v přírodních a tavených sýrech. V teoretické části jsou popsány možnosti extrakce, frakcionace a stanovení frakcí… (more)

Subjects/Keywords: sýry; GC; MK; VMK; TLC; SPE; cheese; GC; FA; FFA; TLC; SPE

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Hornáková, M. (2015). Možnosti analytického stanovení volných mastných kyselin . (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/38303

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Hornáková, Miroslava. “Možnosti analytického stanovení volných mastných kyselin .” 2015. Thesis, Brno University of Technology. Accessed July 16, 2019. http://hdl.handle.net/11012/38303.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Hornáková, Miroslava. “Možnosti analytického stanovení volných mastných kyselin .” 2015. Web. 16 Jul 2019.

Vancouver:

Hornáková M. Možnosti analytického stanovení volných mastných kyselin . [Internet] [Thesis]. Brno University of Technology; 2015. [cited 2019 Jul 16]. Available from: http://hdl.handle.net/11012/38303.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Hornáková M. Možnosti analytického stanovení volných mastných kyselin . [Thesis]. Brno University of Technology; 2015. Available from: http://hdl.handle.net/11012/38303

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Brno University of Technology

14. Koval, Dominik. Výběr a optimalizace metody stanovení volných mastných kyselin .

Degree: 2018, Brno University of Technology

URL: http://hdl.handle.net/11012/80713

► Tato diplomová práce se zabývá optimalizací a validací metody pro stanovení volných mastných kyselin. Teoretická část je zaměřená na možnosti extrakce, rozdělení extraktu, esterifikaci, stanovení… (more)

▼ Tato diplomová práce se zabývá optimalizací a validací metody pro stanovení volných mastných kyselin. Teoretická část je zaměřená na možnosti extrakce, rozdělení extraktu, esterifikaci, stanovení na plynovém chromatografu a stručný popis nejdůležitějších validačních parametrů. Vše s hlavním důrazem kladeným na aplikaci na volné mastné kyseliny. V experimentální části je uveden výběr a postup optimalizace jednotlivých kroků metody. Pro extrakci lipidů byla zvolena extrakce směsí rozpouštědel (diethylether/petrolether) vycházející z normy ČSN EN ISO 1735, pro zisk frakce volných mastných kyselin byla testována extrakce na pevnou fázi. Pro derivatizaci byla vybrána kysele katalyzovaná esterifikace vycházející z normy ČSN EN ISO 5509 za použití methanolového roztoku BF3 a pro stanovení methylesterů mastných kyselin byl použit plynový chromatograf s plamenově-ionizačním detektorem. Následně byly ověřeny vybrané validační parametry metody: opakovatelnost, reprodukovatelnost, linearita, meze detekce a meze stanovitelnosti. Jako modelové vzorky pro výběr a optimalizaci metody byly použity slunečnicový olej a sýr ementálského typu zakoupené v běžné tržní síti.; This master´s thesis deals with optimization and validation of method for determination of free fatty acids. The theoretical part is focused on possibilities of extraction, extract separation, esterification, gas chromatography determination and brief description of the most important validation parameters. All with main emphasis on applying on free fatty acids. The experimental part describes the selection and procedure of optimizing individual steps of the method. Extraction of lipids was performed by solvent mixture (diethylether/petroleumether), based on the standard ČSN EN ISO 1735, for the extraction of free fatty acid solid phase extraction was tested. The acid catalyzed esterification based on ČSN EN ISO 5509 using methanolic solution BF3 was used for derivatization of free fatty acids and a gas chromatograph with a flame ionization detector was used for their determination. Subsequently, selected validation parameters of the method were verified: repeatability, reproducibility, linearity, limits of detection and quantitation. Sunflower oil and emmental type cheese, bought in common food market, were used as model samples for selection and optimatization of the method. Advisors/Committee Members: Vítová, Eva (advisor).

Subjects/Keywords: sýry; GC-FID; SPE; MK; VMK; cheese; GC-FID; SPE; FA; FFA

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Koval, D. (2018). Výběr a optimalizace metody stanovení volných mastných kyselin . (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/80713

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Koval, Dominik. “Výběr a optimalizace metody stanovení volných mastných kyselin .” 2018. Thesis, Brno University of Technology. Accessed July 16, 2019. http://hdl.handle.net/11012/80713.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Koval, Dominik. “Výběr a optimalizace metody stanovení volných mastných kyselin .” 2018. Web. 16 Jul 2019.

Vancouver:

Koval D. Výběr a optimalizace metody stanovení volných mastných kyselin . [Internet] [Thesis]. Brno University of Technology; 2018. [cited 2019 Jul 16]. Available from: http://hdl.handle.net/11012/80713.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Koval D. Výběr a optimalizace metody stanovení volných mastných kyselin . [Thesis]. Brno University of Technology; 2018. Available from: http://hdl.handle.net/11012/80713

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Brno University of Technology

15. Moos, Martin. Prekoncentrační techniky pro stanovení uranu s využitím modifikovaných sorbentů.

Degree: 2011, Brno University of Technology

URL: http://hdl.handle.net/11012/1500

► Práce byla zaměřena na prekoncentrační techniky pro stanovení uranu na modifikovaných sorbentech, s finálním využitím ICP-OES a ICP-MS. Stanovení uranu bylo provedeno na ICP-OES při… (more)

▼ Práce byla zaměřena na prekoncentrační techniky pro stanovení uranu na modifikovaných sorbentech, s finálním využitím ICP-OES a ICP-MS. Stanovení uranu bylo provedeno na ICP-OES při vlnové délce 385,958 nm. Byly nastaveny optimální provozní parametry přístroje, vyšetřen vliv minerálních kyselin (HCl, HNO3), tenzidů (Septonexu, Ajatinu) a organických činidel (4-(2-pyridylazo)resorcinolu, Ammonium pyrrolidindithiokarbamidátu, 8 -hydroxychinolin-5-sulfonové kyseliny a 1,2-dihydroxyantrachinonu-3-sulfonové kyseliny). Pro analýzu vzorků pomocí ICP-MS byl vybrán izotop 238U, jako interní standard byl použit 209Bi (200 ?g•l-1). Pro prekoncentraci uranu (VI) byly použity modifikované silikagely (Silikage-C18, C8 a Fenyl) a dva typy Amberlitů XAD 4 a XAD 16. Komerčně vyráběné Amberlity byly upraveny sušením při 100°C (24 hod), následně pomlety, a z pomletého sorbentu byla vybrána frakce 0,32-0,63 ?m. Takto získaný sorbent byl aktivován v metanolu. Kondicionace Amberlitů provedena deionizovanou vodou a Septonexem (5•10-3 mol•l-1) při pH 8. Samotná sorpce uranu (VI) probíhala optimálně při pH 8 v přítomnosti 4-(2-pyridylazo)resorcinolu nebo ammonium pyrolidindithiokarbamidátu u Amberlitu XAD 16 ještě 1,2-dihydroxyantrachinon-3-sulfonové kyseliny, vše v optimálním pětinásobném hmotnostním nadbytku ke koncentraci uranu (VI). Pro opětnou eluci byla optimální směs acetonu s 1 mol•l-1 HNO3 v poměru 1:1. Aceton byl posléze z eluátu odpařen a finální analýza provedena pomocí ICP-OES. Při prekoncentraci uranu (VI) s využitím sorbentu Silikagel-C18 byla kondicionace provedena etanolem, deionizovanou vodou a Zephyraminu (5•10-4 mol•l-1) při pH 8. Pro Silikagel-C8 a Silikagel-Fenyl byla použita stejná kondicionace pouze bez Zephyraminu. Při použití sorbentu Silikagel-C18 poskytovala nejvyšší sorpční účinnost 1,2-dihydroxyantrachinon-3-sulfonová kyselina, při použití Silikagelu-C8 ammonium pyrrolidindithiokarbamidát a pro Silikagel-Fenyl 8-hydroxychinolin-5-sulfonová kyselina, vše optimálně v pětinásobku hmotnostní koncentrace uranu (VI) při pH 8. Optimální eluce provedena směsí acetonu a etanolu v poměru 1:1 v přítomnosti 1 mol•l-1 HCl, u všech modifikovaných silikagelů. Aceton a etanol byl z eluátu odstraněn odpařením a finální analýza uranu provedena pomocí ICP-MS. Nejlépe se osvědčil sorbent silikagel-C18 v přítomnosti Zephyraminu a 1,2-dihydroxyantrachinon-3-sulfonové kyseliny. Tato sorpce probíhala také v přítomnosti 20 ?g•l-1 mikroelementů (Be, V, Co, Ni, Y, Pb, Th, Cd) a v přítomnosti definovaného nadbytku K, Na, Ca, Mg, Al a Fe. Přímá analýza uranu byla provedena u vzorku vody z řeky Ploučnice a z Turonské zvodně s obsahem uranu 3,5 a 19,3 ?g•l-1. Ostatní studované vody vyžadovaly prekoncentraci uranu (VI) na sorbentu Silikagel-C18 v přítomnosti 1,2-dihydroxyantrachinon-3-sulfonové kyseliny a Zephyraminu. Výsledky analýzy dávaly statisticky uspokojivé výsledky, které potvrdilo i použití standardního přídavku 20 ?g•l-1.; The work has been focused on the preconcentration techniques for determination of uranium on the modified… Advisors/Committee Members: Sommer, Lumír (advisor).

Subjects/Keywords: URAN; SPE; ICP-MS; ICP-OES; URANIUM; SPE; ICP-MS; ICP-OES

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Moos, M. (2011). Prekoncentrační techniky pro stanovení uranu s využitím modifikovaných sorbentů. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/1500

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Moos, Martin. “Prekoncentrační techniky pro stanovení uranu s využitím modifikovaných sorbentů. ” 2011. Thesis, Brno University of Technology. Accessed July 16, 2019. http://hdl.handle.net/11012/1500.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Moos, Martin. “Prekoncentrační techniky pro stanovení uranu s využitím modifikovaných sorbentů. ” 2011. Web. 16 Jul 2019.

Vancouver:

Moos M. Prekoncentrační techniky pro stanovení uranu s využitím modifikovaných sorbentů. [Internet] [Thesis]. Brno University of Technology; 2011. [cited 2019 Jul 16]. Available from: http://hdl.handle.net/11012/1500.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Moos M. Prekoncentrační techniky pro stanovení uranu s využitím modifikovaných sorbentů. [Thesis]. Brno University of Technology; 2011. Available from: http://hdl.handle.net/11012/1500

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Brno University of Technology

16. Holubová, Zuzana. Prekoncentrace stopových prvků na modifikovaných sorbentech a jejich stanovení ve vodách .

Degree: 2013, Brno University of Technology

URL: http://hdl.handle.net/11012/25793

► Práce byla zaměřena na prekoncentrační techniky pro stanovení 9Be, 51V, 59Co, 60Ni, 89Y, 111Cd, 208Pb, 232Th a 238U na modifikovaných pevných sorbentech ve spojení s… (more)

▼ Práce byla zaměřena na prekoncentrační techniky pro stanovení 9Be, 51V, 59Co, 60Ni, 89Y, 111Cd, 208Pb, 232Th a 238U na modifikovaných pevných sorbentech ve spojení s finálním stanovením na hmotnostním spektrometru s indukčně vázaným plazmatem (ICP-MS). V prvním kroku byly optimalizovány provozní parametry ICP-MS. Všechna měření byla prováděna za použití vnitřních standardů o koncentraci 200 µg•l-1 každého prvku. Byly vybrány: 6Li pro 9Be, 45Sc (51V), 72Ge (59Co, 60Ni, 89Y), 103Rh (111Cd), 209Bi (206Pb, 207Pb, 208Pb, 232Th a 238U). Následně byl testován vliv minerálních kyselin (HCl, HNO3), vliv přítomnosti tenzidů (Septonex®, Zephyramin, Ajatin, Brij 35 a dodecylsíran sodný), organických činidel (Amonium pyrolidindithiokarbamát, 8-Hydroxy-5-sulfonová kyselina, 1,2-Dihydroxy-antrachinon-3-sulfonová kyselina a 4-(2-Pyridylazo)resorcinol) a jako poslední byl sledován vliv matričních prvků na intenzitu signálu přístroje. Pro prekoncentraci analytů byl použit polární Silikagel a modifikované nepolární Silikagely (Silikagel-C18, C8 a Fenyl). Dále byla experimentální část věnována prekoncentraci kovů na dvou nepolárních Amberlitech (Strata SDB-L, XAD-16) a jednom středně polárním Amberlitu XAD-7. U všech sorbentů byly testovány sorpce v přítomnosti všech typů výše zmíněných tenzidů v ověřené koncentraci 5•10-4 mol•l-1. Tenzidy byly aplikovány vždy v průběhu kondicionace sorbentu. Dále byly testovány vhodné kombinace tenzidu a organického činidla pro zvýšení návratnosti sorpce sledovaných analytů. Organická činidla byla testována vždy v optimálním množství pětinásobného hmotnostního nadbytku oproti sledovaným analytům, což odpovídá koncentraci 900 µg•l-1. Organické činidlo bylo vždy přidáno do sorbovaného vzorku před zavedením roztoku na sorbent. Taktéž byly testovány různé eluční směsi, a to jak jejich složení, tak i objem nezbytný pro kvantitativní eluci analytů. Na základě výsledků byl vybrán ze skupiny sorbentů s podobnými vlastnostmi, vždy jeden zástupce, u kterého bylo dosaženo nejvyšších návratností pro většinu analytů. Ze skupiny Silikagelů bylo nejvyšších návratností dosaženo na Silikagelu-C18, z nepolárních Amberlitů byl zvolen sorbent Strata SDB-L a středně polární Amberlit XAD-7. Na takto vybraných sorbentech byl testován vliv vybraných matričních prvků a aniontů na účinnost sorpce. Optimalizovaný postup byl aplikován na reálné vzorky přírodních a průmyslových vod. V experimentální části této disertační práce jsou analyty vždy označeny konkrétními izotopy, které byly měřeny pomocí ICP-MS. Samozřejmě prekoncentračním technikám podléhají všechny izotopy sledovaných analytů.; The work has been focused on the preconcentration techniques for determination of 9Be, 51V, 59Co, 60Ni, 89Y, 111Cd, 208Pb, 232Th and 238U on the modified sorbents, all measurements were performed on ICP-MS. The instrument setup was optimized. The solution of internal standard (200 µg•l-1) was used during all measurements. The internal standard were chosen as follows: 6Li for 9Be, 45Sc (51V), 72Ge (59Co, 60Ni, 89Y), 103Rh (111Cd), 209Bi (206Pb,… Advisors/Committee Members: Sommer, Lumír (advisor).

Subjects/Keywords: stopové kovy; SPE; ICP-MS; Silikagel; Amberlit; trace metals; SPE; ICP-MS; Silicagel; Amberlite

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Holubová, Z. (2013). Prekoncentrace stopových prvků na modifikovaných sorbentech a jejich stanovení ve vodách . (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/25793

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Holubová, Zuzana. “Prekoncentrace stopových prvků na modifikovaných sorbentech a jejich stanovení ve vodách .” 2013. Thesis, Brno University of Technology. Accessed July 16, 2019. http://hdl.handle.net/11012/25793.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Holubová, Zuzana. “Prekoncentrace stopových prvků na modifikovaných sorbentech a jejich stanovení ve vodách .” 2013. Web. 16 Jul 2019.

Vancouver:

Holubová Z. Prekoncentrace stopových prvků na modifikovaných sorbentech a jejich stanovení ve vodách . [Internet] [Thesis]. Brno University of Technology; 2013. [cited 2019 Jul 16]. Available from: http://hdl.handle.net/11012/25793.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Holubová Z. Prekoncentrace stopových prvků na modifikovaných sorbentech a jejich stanovení ve vodách . [Thesis]. Brno University of Technology; 2013. Available from: http://hdl.handle.net/11012/25793

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Jönköping University

17. Ljunge, Christian. SPE-förordningens förväntade genomslagskraft i Sverige.

Degree: Commercial Law, 2009, Jönköping University

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-7594

► För att harmonisera handeln, skapa en långsiktig utveckling samt öka sysselsättningen för små och medelstora företag, presenterade Europeiska kommissionen den 25 juni 2008 ett… (more)

▼ För att harmonisera handeln, skapa en långsiktig utveckling samt öka sysselsättningen för små och medelstora företag, presenterade Europeiska kommissionen den 25 juni 2008 ett förslag till ny förordning (SPE-förordningen), angående en ny europeisk privat associationsform. Förslaget möjliggör grundande av ett privat europabolag (SPE-bolag). I praktiken skulle föreslagen bolagsform betyda att entreprenörer erbjuds en möjlighet att etablera samma bolagsform inom hela EU och dessutom underlätta för gränsöverskridande verksamhet. Redan 2004 öppnades möjligheten att bedriva en europeisk bolagsform, europabolaget (även kallat SE-bolag), som till skillnad från SPE-bolaget i första hand är utformat för publika bolag. Fyra år efter förordningens ikraftträdande, har knappt 60 europabolag registrerats inom hela EU och bolagsformens misslyckande kan konstateras. Uppsatsens syfte är att utreda vilket genomslag föreslagen förordning förväntas erhålla bland små och medelstora företag i Sverige. Genomslagskraften skall bedömas utifrån två olika perspektiv, dels dess effekt på näringslivet och dels dess rättspolitiska påverkan. Den grundläggande förutsättningen för att förordningen skall få genomslag är att det föreligger ett behov av förändring av bolagsrätten för små och medelstora företag. Om ifrågavarande företag inte har ett behov, vilket enligt författarna är en stor anledning till europabolagets fiasko, kommer även denna förordning att gå en misslyckad framtid till mötes. Författarnas åsikt är att svenska små och medelstora företag har ett behov av förändring. Behovet identifieras vara ett lämpligare och mer anpassat regelverk för aktuella företag i Sverige. ABL är inte anpassat för mindre företag och tillämpningen resulterar i hinder och administrativa kostnader av olika slag. Nationella utredningar om att regelverket måste förenklas är bra men föreslagna metoder löser inte problemen. Lagstiftaren har stirrat sig blind på trenderna i Europa istället för att i första hand koncentrera sig på vad företagssfären i Sverige är i behov av. Enligt författarna möter föreslagen förordning det identifierade behovet av förändring, i alla fall teoretiskt sett. Med referens till tidigare erfarenheter av överstatliga initiativ skiljer sig dock teorin många gånger från praktiken. Dock har författarna kommit fram till att förordningen kan bli ett konkurrenskraftigt alternativ till andra bolagsformer i Sverige. Därutöver förväntas även en viss rättspolitisk påverkan på ABL.

Subjects/Keywords: Europeisk bolagsrätt; Harmonisering; SPE-förordningen; SPE-bolag; Law (excluding Law and Society); Juridik (exklusive juridik och samhälle)

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Ljunge, C. (2009). SPE-förordningens förväntade genomslagskraft i Sverige. (Thesis). Jönköping University. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-7594

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Ljunge, Christian. “SPE-förordningens förväntade genomslagskraft i Sverige.” 2009. Thesis, Jönköping University. Accessed July 16, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-7594.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Ljunge, Christian. “SPE-förordningens förväntade genomslagskraft i Sverige.” 2009. Web. 16 Jul 2019.

Vancouver:

Ljunge C. SPE-förordningens förväntade genomslagskraft i Sverige. [Internet] [Thesis]. Jönköping University; 2009. [cited 2019 Jul 16]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-7594.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Ljunge C. SPE-förordningens förväntade genomslagskraft i Sverige. [Thesis]. Jönköping University; 2009. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-7594

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

18. Padovan, Rodrigo Nogueira. Degradação de hormônios em águas de abastecimento público por fotocatálise heterogênea solar.

Degree: PhD, Química Analítica e Inorgânica, 2015, University of São Paulo

URL: http://www.teses.usp.br/teses/disponiveis/75/75135/tde-18082015-104331/ ;

►

Vários compostos utilizados ou produzidos pelo homem quando lançados no meio ambiente, ou mesmo em estações de tratamento de esgoto, não são facilmente degradados ou… (more)

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Vários compostos utilizados ou produzidos pelo homem quando lançados no meio ambiente, ou mesmo em estações de tratamento de esgoto, não são facilmente degradados ou removidos. Desse modo, acabam voltando às estações de tratamento de água, que em sua maioria utilizam métodos que não são capazes de remover tais compostos, podendo até aumentar o efeito biológico destes. A detecção destes compostos é um desafio para a Química Analítica, já que ocorrem em baixas concentrações. Degradou-se uma mistura de quatro hormônios ¾ três naturais, 17 β-estradiol (E2), estrona (E1) e estriol (E3), e um sintético, 17 α-etinilestradiol (EE2) ¾ em água de abastecimento público pela fotocatálise heterogênea solar, utilizando-se o fotocatalisador dióxido de titânio suportado em um reator de placa plana operado com reciclo. Foi também desenvolvido e validado um método analítico totalmente automatizado que possibilitou detectar e quantificar baixas concentrações dos quatro hormônios. Foram obtidos limites de quantificação de 10 μg L-1, com a extração de 125 μL de amostra, com coeficiente de variação (< 20%) e exatidão (todos entre 80 a 120%) dentro dos limites aceitáveis para este tipo de análise. Foi possível verificar que a eficiência de degradação atingiu mais de 90% em menos de 4 horas para todos os hormônios. Mesmo com esse nível de degradação não foi possível a remoção da atividade estrogênica. Só houve uma redução significativa após 9 h de degradação. Possivelmente, a atividade estrogênica foi mantida pela concentração restante dos hormônios e/ou pela formação de produtos de degradação que também apresentavam atividade biológica. Alguns desses compostos foram propostos, sendo alguns conhecidos na literatura. No entanto, com as análises realizadas, não foi possível se ter certeza de que os compostos gerados no tratamento são realmente os sugeridos.

Several compounds used or produced by man, when released into the environment, or even in sewage treatment plants, are not easily degraded or removed. Thus, these compounds eventually return to water treatment plants, which mostly use methods incapable of removing them, and may even enhance their biological effect. The detection of these compounds is a challenge to Analytical Chemistry, as they occur at low concentrations. A mixture of four hormones were degraded ¾ three of them of natural origin, 17β-estradiol (E2), estrone (E1), and estriol (E3) and a synthetic one, 17α-ethinyl estradiol (EE2) ¾ in public water supply by solar heterogeneous photocatalysis, using supported titanium dioxide as the photocatalyst in a flat-plate reactor in recycling mode. A fully automated analytical method was developed and validated making it possible to detect and quantify low concentrations of the four hormones. Quantification limits of 10 μg L-1 were achieved with the extraction of a 125 μL-sample, with coefficients of variation (< 20%) and accuracy (all between 80 and 120%) were acceptable limits for this type of analysis. It was possible to observe that the…

Advisors/Committee Members: Azevedo, Eduardo Bessa.

Subjects/Keywords: Degradação solar; Fotocatálise heterogenia; heterogeneous photocatalysis; hormones; hormônios; solar degradation; SPE-on line; SPE-on line

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Padovan, R. N. (2015). Degradação de hormônios em águas de abastecimento público por fotocatálise heterogênea solar. (Doctoral Dissertation). University of São Paulo. Retrieved from http://www.teses.usp.br/teses/disponiveis/75/75135/tde-18082015-104331/ ;

Chicago Manual of Style (16^th Edition):

Padovan, Rodrigo Nogueira. “Degradação de hormônios em águas de abastecimento público por fotocatálise heterogênea solar.” 2015. Doctoral Dissertation, University of São Paulo. Accessed July 16, 2019. http://www.teses.usp.br/teses/disponiveis/75/75135/tde-18082015-104331/ ;.

MLA Handbook (7^th Edition):

Padovan, Rodrigo Nogueira. “Degradação de hormônios em águas de abastecimento público por fotocatálise heterogênea solar.” 2015. Web. 16 Jul 2019.

Vancouver:

Padovan RN. Degradação de hormônios em águas de abastecimento público por fotocatálise heterogênea solar. [Internet] [Doctoral dissertation]. University of São Paulo; 2015. [cited 2019 Jul 16]. Available from: http://www.teses.usp.br/teses/disponiveis/75/75135/tde-18082015-104331/ ;.

Council of Science Editors:

Padovan RN. Degradação de hormônios em águas de abastecimento público por fotocatálise heterogênea solar. [Doctoral Dissertation]. University of São Paulo; 2015. Available from: http://www.teses.usp.br/teses/disponiveis/75/75135/tde-18082015-104331/ ;

19. Ferreira, Tanare Cambraia Ribeiro. Identificação e pré-concentração dos produtos da fotodegradação de antimicrobianos.

Degree: PhD, Química Analítica e Inorgânica, 2014, University of São Paulo

URL: http://www.teses.usp.br/teses/disponiveis/75/75135/tde-12022015-112950/ ;

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A identificação de intermediários formados durante os processos de tratamentos de efluentes tem se tornado alvo de estudos. Entretanto, uma das questões mais importantes nos… (more)

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A identificação de intermediários formados durante os processos de tratamentos de efluentes tem se tornado alvo de estudos. Entretanto, uma das questões mais importantes nos estudos de intermediários formados durante a fotólise ou degradação de fármacos por processos oxidativos avançados publicados atualmente é a concentração inicial utilizada. Altas concentrações dificultam a compreensão da real situação que ocorre na natureza, onde esses compostos são encontrados em baixas concentrações. Dentro deste contexto, o presente estudo, avaliou a pré-concentração de intermediários formados durante a fotólise em solução aquosa e em esgoto sintético da sulfametazina (SMZ), do ciprofloxacino (CIP) e do enrofloxacino (ENR) em diferentes concentrações (25 mg L-1 e 250 μg L-1 para SMZ; 10 mg L-1 e 100 μg L-1 para CIP e ENR) utilizando espectromatria de massas sequencial de alta resolução (Q-ToF e LIT-Orbitrap MS). Foram identificados oito intermediários da fotodegradação da SMZ, dentre estes os de m/z nominal 140 e 229 ainda não relatados na literatura. A metodologia desenvolvida para a SMZ foi aplicada a análises de produtos de transformação vindos de reator anaeróbio. As análises da biodegradação da SMZ permitiram a identificação de três produtos de transformação. O m/z 295 foi comum aos dois processos, fotólise e biodegradação. O m/z 227 foi descrito pela primeira vez como produto de biodegradação anaeróbia da SMZ. Tanto para o CIP quanto para o ENR foram identificados 10 intermediários, apesar da similaridade entre os dois fármacos, apenas um produto de degradação foi comum aos dois, o m/z 346, além do próprio CIP que é intermediário do ENR. Dentre as fases extratoras avaliadas, a Oasis HLB se mostrou mais eficiente na recuperação dos intermediários. A pré-concentração de intermediários formados durante a fotodegradação dos antimicrobianos estudados permitiu a avaliação da degradação destes em concentrações menores do que aquelas atingidas pelos trabalhos já publicados que abordaram rotas de degradação. Os perfis de degradação em diferentes concentrações e em diferentes matrizes apresentam indícios de serem diferente, tanto no perfil quanto na composição proporcional entre os produtos formados. Esses resultados são promissores, visto que permitem uma aproximação às concentrações ambientalmente relevantes.

Identification of intermediate products formed during effluent treatment has become the focus of some studies. However, one of the most important issues during the photolysis of drugs or degradation by advanced oxidation processes is the high and invariable initial concentration of the treated drug. High concentrations, used in currently publications, potentially hinder the understanding of the real situation that occurs in nature, where low concentrations of these drugs are usually found. Here we focused in the identification of the degradation products of sulfamethazine (SMZ), ciprofloxacin (CIP) and enrofloxacin (ENR) obtained by photolysis in aqueous and synthetic wastewater medium. Solid-phase…

Advisors/Committee Members: Santos Neto, Álvaro José dos.

Subjects/Keywords: antimicrobials; antimicrobianos; fotodegradação; LC-MS/MS; LC-MS/MS; photodegradation; photodegradation products; produtos de fotodegradação; SPE; SPE

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Ferreira, T. C. R. (2014). Identificação e pré-concentração dos produtos da fotodegradação de antimicrobianos. (Doctoral Dissertation). University of São Paulo. Retrieved from http://www.teses.usp.br/teses/disponiveis/75/75135/tde-12022015-112950/ ;

Chicago Manual of Style (16^th Edition):

Ferreira, Tanare Cambraia Ribeiro. “Identificação e pré-concentração dos produtos da fotodegradação de antimicrobianos.” 2014. Doctoral Dissertation, University of São Paulo. Accessed July 16, 2019. http://www.teses.usp.br/teses/disponiveis/75/75135/tde-12022015-112950/ ;.

MLA Handbook (7^th Edition):

Ferreira, Tanare Cambraia Ribeiro. “Identificação e pré-concentração dos produtos da fotodegradação de antimicrobianos.” 2014. Web. 16 Jul 2019.

Vancouver:

Ferreira TCR. Identificação e pré-concentração dos produtos da fotodegradação de antimicrobianos. [Internet] [Doctoral dissertation]. University of São Paulo; 2014. [cited 2019 Jul 16]. Available from: http://www.teses.usp.br/teses/disponiveis/75/75135/tde-12022015-112950/ ;.

Council of Science Editors:

Ferreira TCR. Identificação e pré-concentração dos produtos da fotodegradação de antimicrobianos. [Doctoral Dissertation]. University of São Paulo; 2014. Available from: http://www.teses.usp.br/teses/disponiveis/75/75135/tde-12022015-112950/ ;

20. Figueiredo, Natália Guimarães de. Avaliação da remoção de interferentes endócrinos, ativos farmacêuticos e cafeína em água para abastecimento público do estado de São Paulo.

Degree: PhD, Toxicologia e Análises Toxicológicas, 2014, University of São Paulo

URL: http://www.teses.usp.br/teses/disponiveis/9/9141/tde-02102014-140733/ ;

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Alguns compostos orgânicos como interferentes endócrinos e ativos farmacêuticos estão sendo encontrados em águas superficiais e vêm chamando a atenção de orgãos públicos e da… (more)

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Alguns compostos orgânicos como interferentes endócrinos e ativos farmacêuticos estão sendo encontrados em águas superficiais e vêm chamando a atenção de orgãos públicos e da comunidade científica. Dentre esses compostos, foram enfatizados nesse trabalho, o hormônio sintético 17α-etinilestradiol, o surfactante (4-nonilfenol), bisfenol A, o antibiótico β-lactâmico amoxicilina e a cafeína como traçador de atividade antrópica. Estes compostos são continuamente introduzidos em corpos d\'água pelo lançamento de esgoto in natura o que afeta a qualidade da água, a saúde dos ecossistemas e impacta o suprimento de água potável. Considerando a baixa taxa de remoção desses contaminantes pelo tratamento de água atualmente utilizado no Brasil e o estado de degradação dos mananciais de água para abastecimento público, esse trabalho apresenta o desenvolvimento de metodologia analítica para determinação dos compostos citados e a avaliação da eficiência de remoção quando o tratamento convencional de água é aplicado. A determinação foi baseada em métodos já estabelecidos e envolveram as etapas de limpeza e concentração de amostra usando extração em fase sólida (SPE) e análise por cromatografia a líquido de alta eficiência (HPLC) com detector de arranjo de diodos (DAD) e espectrometria de massas. As amostras do Reservatório do Guarapiranga foram utilizadas para ensaios em escala laboratorial que simulavam o tratamento convencional de água em planta real. Os resultados mostraram a adequação dos métodos utilizados para a separação e determinação desses compostos em amostras ambientais. Além disso, apontaram para a necessidade de se avaliar a utilização de metodologias não convencionais que otimizem a remoção pelo tratamento de água atualmente utilizado.

Some organic compounds, such as endocrine disruptors and pharmaceuticals, are being found in the surface water, and are concerning both the public organs and the scientific community. Among these compounds, the synthetic hormone 17α-ethinylestradiol, the surfactant (4-nonylphenol), bisphenol-A, the β-lactam antibiotic amoxicillin and the marker of human activity caffeine were highlighted in the present work. These compounds are continuously drained to the water bodies by sewers, affecting not only the water quality itself, but also the ecosystems, and impacting the drinking water availability. Currently in Brazil, the removal rate of these contaminants is low, whereas the water sources for public supply are highly degraded. In this context, the present work develops an analytical method to detect the aforementioned compounds, and to evaluate the efficiency of its removal by conventional water treatments. Detection was based on pre-established methods and steps involved clean up and samples concentration by solid phase extraction (SPE), high performance liquid chromatography with diode array detection (DAD), and mass spectrometry. Recovery tests were done using environmental samples from Guarapiranga Reservoir (São Paulo, SP). This samples were further used in…

Advisors/Committee Members: Pinto Junior, Ernani.

Subjects/Keywords: Cafeína; Caffeine; Endocrine disruptors; Fármacos; Interferentes endócrinos; Pharmaceuticals; SPE-HPLC-DAD/MS; SPE-HPLC-DAD/MS; Tratamento de água; Water treatment

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Figueiredo, N. G. d. (2014). Avaliação da remoção de interferentes endócrinos, ativos farmacêuticos e cafeína em água para abastecimento público do estado de São Paulo. (Doctoral Dissertation). University of São Paulo. Retrieved from http://www.teses.usp.br/teses/disponiveis/9/9141/tde-02102014-140733/ ;

Chicago Manual of Style (16^th Edition):

Figueiredo, Natália Guimarães de. “Avaliação da remoção de interferentes endócrinos, ativos farmacêuticos e cafeína em água para abastecimento público do estado de São Paulo.” 2014. Doctoral Dissertation, University of São Paulo. Accessed July 16, 2019. http://www.teses.usp.br/teses/disponiveis/9/9141/tde-02102014-140733/ ;.

MLA Handbook (7^th Edition):

Figueiredo, Natália Guimarães de. “Avaliação da remoção de interferentes endócrinos, ativos farmacêuticos e cafeína em água para abastecimento público do estado de São Paulo.” 2014. Web. 16 Jul 2019.

Vancouver:

Figueiredo NGd. Avaliação da remoção de interferentes endócrinos, ativos farmacêuticos e cafeína em água para abastecimento público do estado de São Paulo. [Internet] [Doctoral dissertation]. University of São Paulo; 2014. [cited 2019 Jul 16]. Available from: http://www.teses.usp.br/teses/disponiveis/9/9141/tde-02102014-140733/ ;.

Council of Science Editors:

Figueiredo NGd. Avaliação da remoção de interferentes endócrinos, ativos farmacêuticos e cafeína em água para abastecimento público do estado de São Paulo. [Doctoral Dissertation]. University of São Paulo; 2014. Available from: http://www.teses.usp.br/teses/disponiveis/9/9141/tde-02102014-140733/ ;

Universidade Federal do Maranhão

21. MARCONIEL NETO DA SILVA. DESENVOLVIMENTO DE MÉTODO MULTIRESIDUAL PARA ANÁLISE DE PESTICIDAS EM MEL, UTILIZANDO CROMATOGRAFIA A LÍQUÍDO COM DETECTOR ESPECTROFOTOMÉTRICO COM ARRANJO DE DIODOS.

Degree: 2009, Universidade Federal do Maranhão

URL: http://www.tedebc.ufma.br//tde_busca/arquivo.php?codArquivo=757

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Honey is a product of proven therapeutic and nutritional properties, and which may act as an excellent bioindicator, given the way the bees gather and… (more)

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Honey is a product of proven therapeutic and nutritional properties, and which may act as an excellent bioindicator, given the way the bees gather and process the raw material used in its preparation. The monitoring of pesticide residues in honey is important both to control product quality in domestic and international markets, and in assessing the potential for contamination in areas near agricultural crops. Considering these facts, we developed a method for analyzing carbamate insecticides (carbaryl and carbofuran), organochlorine (aldrin and dieldrin), organophosphates (dimethoate and parathion methyl) and pyrethroid (permethrin), and the group of anilides herbicide (propanil) and fenoxiácidos (2,4-D) in honey. Hence, in this work the analytical conditions were established for the proper determination of residues of pesticides cited using the technique of solid phase extraction and liquid chromatography with UV detection with a diode array. The study aimed to compare different analytical conditions for the determination of pesticides, looking for better separation, sensitivity, precision and accuracy in the determination of pesticide residues in samples of honey bees. Standard solutions at concentrations ranging from 1.0 to 20.0 μ g mL-1 were evaluated in different mobile phases, using a C18 column (250 x 4.6 mm id, 5 μ m). The mobile phase composition more suitable was acetonitrile: water at pH 3.0 (acidified with acetic acid) in gradient mode, for monitoring the compounds at a wavelength of 220 nm. In the established conditions, except for aldrin and dieldrin and dimeotate, it was observed recoveries between 75.26% and 113.58%, with variation Coefficients Between 2.16% and 11.31% for concentration levels raging from 0:10 to 1.00 μ gg-1 (correlation coefficients between 0.9978 and 0.9998). Recoveries lower than 50% to the cited insecticides were observed when using ethyl acetate solvent extractor and the solvent elution by ethyl acetate, in such a way new studies can be done to obtain better recoveries for these compounds.

O mel é um produto de reconhecidas propriedades nutritivas e terapêuticas e, o qual pode atuar como um excelente bioindicador, dada à forma como as abelhas recolhem e processam a matéria-prima utilizada na sua elaboração. O monitoramento de resíduos de pesticidas no mel é importante, tanto para o controle de qualidade do produto nos mercados nacional e internacional, quanto na avaliação do potencial de contaminação em áreas próximas a cultivos agrícolas. Considerando tais fatos, foi desenvolvido um método para análise dos inseticidas carbamatos (carbaril e carbofurano), organoclorados (aldrin e dieldrin), organofosforados (dimetoato e parationa metílica) e piretróide (permetrina), além do herbicida do grupo das anilidas (propanil) e fenoxiácidos (2,4-D) em mel. Para tanto, neste trabalho foram estabelecidas condições analíticas para a adequada determinação dos resíduos dos citados pesticidas utilizando a técnica de extração em fase solida e cromatografia líquida com detecção…

Advisors/Committee Members: Gilvanda Silva Nunes, Teresa Cristina R. dos Santos Franco.

Subjects/Keywords: Pesticidas; Mel; HPLC-DAD; Extração em fase sólida; SPE; QUIMICA ANALITICA; Pesticides; Honey; HPLC-DAD; Solid phase extraction; SPE

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

SILVA, M. N. D. (2009). DESENVOLVIMENTO DE MÉTODO MULTIRESIDUAL PARA ANÁLISE DE PESTICIDAS EM MEL, UTILIZANDO CROMATOGRAFIA A LÍQUÍDO COM DETECTOR ESPECTROFOTOMÉTRICO COM ARRANJO DE DIODOS. (Thesis). Universidade Federal do Maranhão. Retrieved from http://www.tedebc.ufma.br//tde_busca/arquivo.php?codArquivo=757

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

SILVA, MARCONIEL NETO DA. “DESENVOLVIMENTO DE MÉTODO MULTIRESIDUAL PARA ANÁLISE DE PESTICIDAS EM MEL, UTILIZANDO CROMATOGRAFIA A LÍQUÍDO COM DETECTOR ESPECTROFOTOMÉTRICO COM ARRANJO DE DIODOS.” 2009. Thesis, Universidade Federal do Maranhão. Accessed July 16, 2019. http://www.tedebc.ufma.br//tde_busca/arquivo.php?codArquivo=757.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

SILVA, MARCONIEL NETO DA. “DESENVOLVIMENTO DE MÉTODO MULTIRESIDUAL PARA ANÁLISE DE PESTICIDAS EM MEL, UTILIZANDO CROMATOGRAFIA A LÍQUÍDO COM DETECTOR ESPECTROFOTOMÉTRICO COM ARRANJO DE DIODOS.” 2009. Web. 16 Jul 2019.

Vancouver:

SILVA MND. DESENVOLVIMENTO DE MÉTODO MULTIRESIDUAL PARA ANÁLISE DE PESTICIDAS EM MEL, UTILIZANDO CROMATOGRAFIA A LÍQUÍDO COM DETECTOR ESPECTROFOTOMÉTRICO COM ARRANJO DE DIODOS. [Internet] [Thesis]. Universidade Federal do Maranhão; 2009. [cited 2019 Jul 16]. Available from: http://www.tedebc.ufma.br//tde_busca/arquivo.php?codArquivo=757.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

SILVA MND. DESENVOLVIMENTO DE MÉTODO MULTIRESIDUAL PARA ANÁLISE DE PESTICIDAS EM MEL, UTILIZANDO CROMATOGRAFIA A LÍQUÍDO COM DETECTOR ESPECTROFOTOMÉTRICO COM ARRANJO DE DIODOS. [Thesis]. Universidade Federal do Maranhão; 2009. Available from: http://www.tedebc.ufma.br//tde_busca/arquivo.php?codArquivo=757

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universidade Federal de Santa Maria

22. Filipe Fagan Donato. RESÍDUOS DE AGROTÓXICOS EM ÁGUA POTÁVEL USANDO SPE E DETERMINAÇÃO RÁPIDA POR LC-MS/MS E GC-MS/MS.

Degree: 2012, Universidade Federal de Santa Maria

URL: http://coralx.ufsm.br/tede/tde_busca/arquivo.php?codArquivo=5162

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O uso de agrotóxicos sempre esteve associado à efetividade no controle de pragas ou plantas invasoras para aumentar a produção de alimentos. No entanto, o… (more)

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O uso de agrotóxicos sempre esteve associado à efetividade no controle de pragas ou plantas invasoras para aumentar a produção de alimentos. No entanto, o uso indiscriminado dessas substâncias vem causando a degradação dos recursos hídricos. No Brasil, o Ministério da Saúde através da Portaria 2914 define diversos parâmetros de potabilidade, entre eles, os limites máximos permitidos para alguns agrotóxicos. No presente trabalho foi desenvolvido e validado um método para a determinação de resíduos de 70 agrotóxicos em água potável, utilizando Extração em Fase Sólida (SPE) para o preparo de amostra e determinação por Cromatografia Gasosa e Líquida, acopladas à Espectrometria de Massas sequencial, com analisador triplo quadrupolo (GC-(TQ)MS/MS e LC- (TQ)MS/MS). Foram avaliados diferentes volumes de amostra, sorventes e solventes de eluição. Os melhores resultados foram obtidos com 100 mL de amostra acidificada em pH 2,5, cartucho SPE Oasis HLB 60 mg/3 mL e diclorometano/metanol como eluente. As curvas analíticas apresentaram linearidade entre 10 e 250 Sg L-1, com valores de r2 maiores que 0,99 para todos os compostos. Os valores de LOQ do método foram 0,02 Sg L-1 para aldrin, dieldrin e clordano e de 0,5 Sg L-1 para os demais compostos. Para avaliação da exatidão as amostras branco foram fortificadas em 0,5, 1,5 e 4,0 Sg L-1 e um nível extra em 0,02 Sg L-1 para os compostos aldrin, dieldrin e clordano. O método apresentou boa precisão, com valores de RSD inferiores a 20% e boa exatidão, com recuperações entre 70 e 120%. Apenas os compostos metamidofós, aldicarbe, benfuracarbe, terbufós, benomil e tiofanato metílico não foram recuperados de forma adequada. O efeito matriz foi avaliado, mostrando-se superior a 10% para a maioria dos compostos. A fim de compensar este efeito, utilizou-se curvas analíticas preparadas no extrato branco da matriz. O método validado foi aplicado em 12 amostras de água potável de diferentes características (rio, vertente, poço e água tratada), sendo que apenas uma das amostras de água de rio apresentou resíduos de lambda-cialotrina. Os resultados indicam que o método proposto é adequado à análise de resíduos de agrotóxicos em água potável, visto que todos os parâmetros de validação atenderam os limites e parâmetros sugeridos para validação de métodos cromatográficos.

The use of pesticides always has been associated with the effective control of pests or invasive weeds to ensure an increase in the food production. However, the indiscriminate use of these substances has caused the degradation of water resources. In Brazil, the Ministry of Health through Ordinance 2914 defines several parameters of potability, among them, the maximum limits allowed for same pesticides. In this work it was developed and validated a method for the determination of residues of 70 pesticides in drinking water using (SPE) for sample preparation and determination by Gas and Liquid Chromatography coupled to tandem mass spectrometry, triple quadrupole analyzer (GC-(TQ)MS/MS and LC- (TQ)MS/MS). It was evaluated…

Advisors/Committee Members: Renato Zanella, Osmar Damian Prestes, Manoel Leonardo Martins.

Subjects/Keywords: GC-MS/MS; LC-MS/MS; água; SPE; agrotóxicos; LC-MS/MS; GC-MS/MS; SPE; pesticides; water; QUIMICA

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Donato, F. F. (2012). RESÍDUOS DE AGROTÓXICOS EM ÁGUA POTÁVEL USANDO SPE E DETERMINAÇÃO RÁPIDA POR LC-MS/MS E GC-MS/MS. (Thesis). Universidade Federal de Santa Maria. Retrieved from http://coralx.ufsm.br/tede/tde_busca/arquivo.php?codArquivo=5162

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Donato, Filipe Fagan. “RESÍDUOS DE AGROTÓXICOS EM ÁGUA POTÁVEL USANDO SPE E DETERMINAÇÃO RÁPIDA POR LC-MS/MS E GC-MS/MS.” 2012. Thesis, Universidade Federal de Santa Maria. Accessed July 16, 2019. http://coralx.ufsm.br/tede/tde_busca/arquivo.php?codArquivo=5162.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Donato, Filipe Fagan. “RESÍDUOS DE AGROTÓXICOS EM ÁGUA POTÁVEL USANDO SPE E DETERMINAÇÃO RÁPIDA POR LC-MS/MS E GC-MS/MS.” 2012. Web. 16 Jul 2019.

Vancouver:

Donato FF. RESÍDUOS DE AGROTÓXICOS EM ÁGUA POTÁVEL USANDO SPE E DETERMINAÇÃO RÁPIDA POR LC-MS/MS E GC-MS/MS. [Internet] [Thesis]. Universidade Federal de Santa Maria; 2012. [cited 2019 Jul 16]. Available from: http://coralx.ufsm.br/tede/tde_busca/arquivo.php?codArquivo=5162.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Donato FF. RESÍDUOS DE AGROTÓXICOS EM ÁGUA POTÁVEL USANDO SPE E DETERMINAÇÃO RÁPIDA POR LC-MS/MS E GC-MS/MS. [Thesis]. Universidade Federal de Santa Maria; 2012. Available from: http://coralx.ufsm.br/tede/tde_busca/arquivo.php?codArquivo=5162

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universidade Federal de Santa Maria

23. Michele Camara De Vicari. DETERMINAÇÃO DE BISPIRIBAQUE-SÓDICO, QUINCLORAQUE E TEBUCONAZOLE EM ÁGUA DE LAVOURA DE ARROZ IRRIGADO EMPREGANDO SPE E HLPC-DAD.

Degree: 2009, Universidade Federal de Santa Maria

URL: http://coralx.ufsm.br/tede/tde_busca/arquivo.php?codArquivo=2619

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Rice is one of the most produced and consumed cereal in the world. It plays a strategic role both economically and socially. Southern is responsible… (more)

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Rice is one of the most produced and consumed cereal in the world. It plays a strategic role both economically and socially. Southern is responsible for about 60% of Brazilian rice production, which is directly linked to the intensive use of pesticides. Considering it, the study of the remaining of such compounds in crops to assess the risks of environmental contamination is socio-economically very important. Based on that this paper, an analytical approach has been developed and validated in order to determine the residues of bispyribac-sodium, quinclorac, and tebuconazole in water from irrigated rice crops, using Solid Phase Extraction (SPE) and High Performance Liquid Chromatography with Diode Array Detection (HPLC-DAD). The approach consists of preconcentration of water samples in SPE cartridges with 500 mg of C18, followed by elution with methanol and pesticides determination through HPLC-DAD. In the validation of the method, the analytical curve and linearity, limit of detection (LOD), limit of quantification (LOQ), precision (repetitivity and intermediate precision), as well accuracy (recovery) were assessed. The analytical curves displayed linearity between 0.03 and 10 mg L-1 for quinclorac, 0,1 e 10 mg L-1 for bispyribac-sodium and between 0,05 e 10 mg L-1 for tebuconazole, with determination coefficients higher than 0.9999. LOQ values for the approach, considering preconcentration phase of 250 times, were of 1.2 μg L-1 for bispyribac-sodium, 0.4 μg L-1 for quinclorac, and 0.6 μg L-1 for tebuconazole. The method presented recovery values between 76.1 and 116.5% and RSD values smaller than 19.8%. All the validation parameters are within the suggested limits for validation of chromatographic methods. The validated method was applied in the study of pesticides dissipation in water from irrigated rice crops. Bispyribac-sodium and quinclorac were found up to 28 and 91 days after the compounds have been used, respectively and tebuconazole to 21 days after the compound have been used.

O arroz é um dos cereais mais produzidos e consumidos no mundo e desempenha papel estratégico tanto no aspecto econômico quanto social. A Região Sul é responsável por cerca de 60% da produção brasileira de arroz, a qual está diretamente associada ao uso intensivo de pesticidas. Com isso, o estudo da persistência destes compostos nas lavouras para avaliar os riscos de contaminação ambiental é de suma importância sócio-econômica. Neste trabalho foi desenvolvido e validado um método analítico para a determinação de resíduos de bispiribaque-sódico, quincloraque e tebuconazole em amostras de água de lavoura de arroz irrigado, utilizando Extração em Fase Sólida (SPE) e Cromatografia Líquida de Alta Eficiência com Detecção por Arranjo de Diodos (HPLC-DAD). O método consiste na pré-concentração das amostras de água em cartuchos SPE contendo 500 mg de C18, seguida da eluição com metanol e determinação dos pesticidas por HPLC-DAD. Na validação do método avaliou-se curva analítica e linearidade, limite de detecção (LOD), limite…

Advisors/Committee Members: Renato Zanella, Martha Bohrer Adaime, Luis Antonio de Avila.

Subjects/Keywords: HPLC-DAD; SPE; água; arroz; resíduos de pesticidas; QUIMICA; rice; pesticide residues; water; SPE; HPLC-DAD

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Vicari, M. C. D. (2009). DETERMINAÇÃO DE BISPIRIBAQUE-SÓDICO, QUINCLORAQUE E TEBUCONAZOLE EM ÁGUA DE LAVOURA DE ARROZ IRRIGADO EMPREGANDO SPE E HLPC-DAD. (Thesis). Universidade Federal de Santa Maria. Retrieved from http://coralx.ufsm.br/tede/tde_busca/arquivo.php?codArquivo=2619

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Vicari, Michele Camara De. “DETERMINAÇÃO DE BISPIRIBAQUE-SÓDICO, QUINCLORAQUE E TEBUCONAZOLE EM ÁGUA DE LAVOURA DE ARROZ IRRIGADO EMPREGANDO SPE E HLPC-DAD.” 2009. Thesis, Universidade Federal de Santa Maria. Accessed July 16, 2019. http://coralx.ufsm.br/tede/tde_busca/arquivo.php?codArquivo=2619.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Vicari, Michele Camara De. “DETERMINAÇÃO DE BISPIRIBAQUE-SÓDICO, QUINCLORAQUE E TEBUCONAZOLE EM ÁGUA DE LAVOURA DE ARROZ IRRIGADO EMPREGANDO SPE E HLPC-DAD.” 2009. Web. 16 Jul 2019.

Vancouver:

Vicari MCD. DETERMINAÇÃO DE BISPIRIBAQUE-SÓDICO, QUINCLORAQUE E TEBUCONAZOLE EM ÁGUA DE LAVOURA DE ARROZ IRRIGADO EMPREGANDO SPE E HLPC-DAD. [Internet] [Thesis]. Universidade Federal de Santa Maria; 2009. [cited 2019 Jul 16]. Available from: http://coralx.ufsm.br/tede/tde_busca/arquivo.php?codArquivo=2619.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Vicari MCD. DETERMINAÇÃO DE BISPIRIBAQUE-SÓDICO, QUINCLORAQUE E TEBUCONAZOLE EM ÁGUA DE LAVOURA DE ARROZ IRRIGADO EMPREGANDO SPE E HLPC-DAD. [Thesis]. Universidade Federal de Santa Maria; 2009. Available from: http://coralx.ufsm.br/tede/tde_busca/arquivo.php?codArquivo=2619

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

24. Koutouzi, Foteini. Γενετικά και φαινοτυπικά χαρακτηριστικά στελεχών β-αιμολυτικού στρεπτόκοκκου της ομάδας Α από παιδιά με διεισδυτικές και μη διεισδυτικές λομώξεις.

Degree: 2016, National and Kapodistrian University of Athens; Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών (ΕΚΠΑ)

URL: http://hdl.handle.net/10442/hedi/39559

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Streptococcus pyogenes is an important human pathogen. The aims of the study were to investigate streptococcal infections in children (epidemiology, prevalence and diversity of emm-types,… (more)

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Streptococcus pyogenes is an important human pathogen. The aims of the study were to investigate streptococcal infections in children (epidemiology, prevalence and diversity of emm-types, antibiotic susceptibility, macrolide resistant genes and pyrogenic exotoxins-SPE genes). This prospective study conducted 2007-2013, in children ≤14 years old. Identification of S.pyogenes was confirmed by standard techniques, emm typing by PCR and sequencing, and sensitivity to antibiotics by Kirby-Bauer and Etest. Macrolide resistant-genes and pyrogenic exotoxins genes detected by "multiplex" PCR. Analysis performed with SPSS, XLSTAT, x2 tests, Fisher and Pearson. A total of 1324 children (51.8% boys) were included in the study, median age 65 months. Pharyngitis occurred in 84.4%, invasive infections in 5.7% and otitis, pyoderma or vaginitis in 9.9%. Infections occurred in 67.8% of cases from November to May. Frequent were invasive infections in children ≤3 years old and pharyngeal 4-6 years old. Thirty-five different emm-types, including 15-subtypes, were identified. The most prevalent emm-types identified were 1(16.7%), 12(13.6%), 77(10.9%), 4(10.8%) and 28(10.4%). The 30-valent vaccine encompasses 97.3% of emm-types identified in the study. Classification of emm-types to emm-clusters indicated that 35 emm-types belonged to 13 emm-clusters. Antibiotic resistance found: macrolides 20.4%, clindamycin 13.8% (iMLSB 10.5%, cMLSB 3.3%), tetracycline 18.7% levofloxacin 5.4% and chloramphenicol 2.8%. Macrolide resistance genes were detected: erm(A) 50,4%, mef(A) 32.2% and erm(B) 16.3%. No correlation was observed in macrolide consumption and resistance. The speB genes or speA and speB, were often found in invasive isolates. Continuous surveillance of emm types is needed in order to evaluate the possible benefits of an M-protein-based S.pyogenes vaccine.

Ο Streptococcus pyogenes παραμένει σημαντικό παθογόνο για τον άνθρωπο. Στόχοι της μελέτης ήταν να διερευνηθούν οι στρεπτοκοκκικές λοιμώξεις στα παιδιά (επιδημιολογία, επιπολασμός και ποικιλομορφία emm-τύπων, συσχέτιση με 30-δύναμο εμβόλιο, ευαισθησία στα αντιβιοτικά, γονίδια αντοχής στις μακρολίδες και γονίδια πυρετογόνων εξωτοξινών-SPE). Πρόκειται για προοπτική μελέτη που πραγματοποιήθηκε, 2007-2013, σε παιδιά ≤14 ετών. Ταυτοποίηση του S.pyogenes έγινε με κλασικές μεθόδους, τυποποίηση emm-τύπων με PCR και αλληλούχιση και ευαισθησία στα αντιβιοτικά με Kirby-Bauer και Etest. Τα γονίδια αντοχής μακρολιδών και πυρετογόνων εξωτοξινών ανιχνεύτηκαν με “multiplex” PCR. Ανάλυση έγινε με το SPSS, XLSTAT, δοκιμασίες χ2, Fisher και Pearson. Εξετάσθηκαν 1324 παιδιά (51,8% αγόρια) με διάμεση ηλικία 65 μήνες. Φαρυγγίτιδα εμφάνισαν 84,4%, διεισδυτική λοίμωξη 5,7% και ωτίτιδα, πυοδερμία ή κολπίτιδα 9,9%. Το 67,8% των λοιμώξεων σημειώθηκε Νοέμβριο-Μάιο. Συχνές ήταν οι διεισδυτικές λοιμώξεις σε παιδιά ≤3 ετών και οι φαρυγγικές 4-6 ετών. Διαπιστώθηκαν 35 emm-τύποι και 15 υπότυποι με επικρατέστερους: 1(16,7%), 12(13,6%), 77(10,9%), 4(10,9%), και 28(10,4%). Το 97,3% των emm-τύπων περιλαμβάνονται στο…

Subjects/Keywords: Πυογόνος στρεπτόκκοκος; Στρεπτοκοκκικές λοιμώξεις; Emm τύποι; Αντοχή στις μακρολίδες; Γονίδια spe; Streptococcus pyogenes; Streptococcal infections; Emm types; Macrolide resistance; Spe genes

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Koutouzi, F. (2016). Γενετικά και φαινοτυπικά χαρακτηριστικά στελεχών β-αιμολυτικού στρεπτόκοκκου της ομάδας Α από παιδιά με διεισδυτικές και μη διεισδυτικές λομώξεις. (Thesis). National and Kapodistrian University of Athens; Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών (ΕΚΠΑ). Retrieved from http://hdl.handle.net/10442/hedi/39559

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Koutouzi, Foteini. “Γενετικά και φαινοτυπικά χαρακτηριστικά στελεχών β-αιμολυτικού στρεπτόκοκκου της ομάδας Α από παιδιά με διεισδυτικές και μη διεισδυτικές λομώξεις.” 2016. Thesis, National and Kapodistrian University of Athens; Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών (ΕΚΠΑ). Accessed July 16, 2019. http://hdl.handle.net/10442/hedi/39559.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Koutouzi, Foteini. “Γενετικά και φαινοτυπικά χαρακτηριστικά στελεχών β-αιμολυτικού στρεπτόκοκκου της ομάδας Α από παιδιά με διεισδυτικές και μη διεισδυτικές λομώξεις.” 2016. Web. 16 Jul 2019.

Vancouver:

Koutouzi F. Γενετικά και φαινοτυπικά χαρακτηριστικά στελεχών β-αιμολυτικού στρεπτόκοκκου της ομάδας Α από παιδιά με διεισδυτικές και μη διεισδυτικές λομώξεις. [Internet] [Thesis]. National and Kapodistrian University of Athens; Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών (ΕΚΠΑ); 2016. [cited 2019 Jul 16]. Available from: http://hdl.handle.net/10442/hedi/39559.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Koutouzi F. Γενετικά και φαινοτυπικά χαρακτηριστικά στελεχών β-αιμολυτικού στρεπτόκοκκου της ομάδας Α από παιδιά με διεισδυτικές και μη διεισδυτικές λομώξεις. [Thesis]. National and Kapodistrian University of Athens; Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών (ΕΚΠΑ); 2016. Available from: http://hdl.handle.net/10442/hedi/39559

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Pontifical Catholic University of Rio de Janeiro

25. GABRIELA COSTA STOLL. [en] METHOD DEVELOPMENT FOR DETERMINATION OF POLYCHLORINATED BIPHENYLS (PCBS) IN SURFACE WATER BY GAS CHROMATOGRAPHY COUPLED TO TANDEM MASS SPECTROMETRY.

Degree: 2018, Pontifical Catholic University of Rio de Janeiro

URL: http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=35914

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[pt] Este trabalho consistiu na implementação, e consequente validação, de metodologia para determinação de bifenilas policloradas (PCBs) em amostras de água e material particulado por… (more)

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[pt] Este trabalho consistiu na implementação, e consequente validação, de metodologia para determinação de bifenilas policloradas (PCBs) em amostras de água e material particulado por cromatografia gasosa acoplada à espectrometria de massas em tandem (GC-MS/MS). O método de análise de água superficial foi desenvolvido para a determinação simultânea de 41 PCBs; utilizando a Extração Acelerada por Solvente (ASE) para o material particulado em suspensão e a Extração em Fase Sólida (SPE) para a fração dissolvida. A quantificação foi realizada no modo de Monitoramento Seletivo de Reação (SRM), com monitoramento de dois padrões de fragmentação m/z precursor-produto. A linearidade das curvas analíticas foi confirmada pelo valor do coeficiente de determinação (R2), além do comportamento aleatório do gráfico de resíduos e pelo teste F na análise da variância (ANOVA) da regressão. A homocedasticidade dos dados foi confirmada pelo teste de Cochran. O Limite de Detecção (LD) para cada um dos dois métodos de extração utilizados variou de 0,06 a 0,50 ng L(-1) para o SPE e 0,01 a 0,12 ng L(-1) para o ASE. A repetibilidade, expressa através dos coeficientes de variação (CV), apresentou valores inferiores a 20 por cento. A recuperação média dos analitos variou de 60 por cento a 118 por cento quando da extração em fase sólida (SPE) e de 65 a 106 por cento para o material particulado suspenso. A seletividade do método foi avaliada pelo Teste F (Snedecor) de homogeneidade de variâncias e pelo Teste t (Student) de comparação de médias. Possíveis perdas durante o processo foram monitoradas pelo uso do padrão surrogate e encontraram-se em limites aceitáveis. O método validado foi aplicado para a análise da água do Canal do Mangue, região central do Rio de Janeiro, e o intervalo encontrado para o somatório de PCBs totais variou de 2,17 ng L(-1) a 5,29 ng L(-1).

[en] The aim of this work consists of the implementation and validation of a methodology for determination of polychlorinated biphenyls (PCBs) in water samples and particulate matter by gas chromatography coupled to tandem mass spectrometry (GC-MS/MS). The surface water analysis method was developed for the simultaneous determination of 41 PCBs; using the Solvent Accelerated Extraction (ASE) for the suspended particulate matter and the Solid Phase Extraction (SPE) for the dissolved fraction. Quantification was performed in Selective Reaction Monitoring (SRM) mode, with monitoring of two m/z precursor-product fragmentation patterns. The linearity of the analytical curves was confirmed by the coefficient of determination (R2), the random behavior of the residual plots and by the F test in the analysis of variance (ANOVA) for the regression. The homoscedasticity of the data was confirmed by the Cochran test. The limit of detection (LD) for each one of the two extraction methods used vary in a range of 0.06 to 0.50 ng L(-1) for the SPE and 0.01 to 0.12 ng L(-1) for the ASE. Regarding the repeatability studies, the coefficients of variation (CV) found were less than 20 per cent. The…

Advisors/Committee Members: CARLOS GERMAN MASSONE.

Subjects/Keywords: [pt] PCBS; [en] PCBS; [pt] GC-MS; [en] GC-MS; [pt] ASE; [en] ASE; [pt] SPE; [en] SPE

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

STOLL, G. C. (2018). [en] METHOD DEVELOPMENT FOR DETERMINATION OF POLYCHLORINATED BIPHENYLS (PCBS) IN SURFACE WATER BY GAS CHROMATOGRAPHY COUPLED TO TANDEM MASS SPECTROMETRY. (Thesis). Pontifical Catholic University of Rio de Janeiro. Retrieved from http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=35914

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

STOLL, GABRIELA COSTA. “[en] METHOD DEVELOPMENT FOR DETERMINATION OF POLYCHLORINATED BIPHENYLS (PCBS) IN SURFACE WATER BY GAS CHROMATOGRAPHY COUPLED TO TANDEM MASS SPECTROMETRY.” 2018. Thesis, Pontifical Catholic University of Rio de Janeiro. Accessed July 16, 2019. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=35914.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

STOLL, GABRIELA COSTA. “[en] METHOD DEVELOPMENT FOR DETERMINATION OF POLYCHLORINATED BIPHENYLS (PCBS) IN SURFACE WATER BY GAS CHROMATOGRAPHY COUPLED TO TANDEM MASS SPECTROMETRY.” 2018. Web. 16 Jul 2019.

Vancouver:

STOLL GC. [en] METHOD DEVELOPMENT FOR DETERMINATION OF POLYCHLORINATED BIPHENYLS (PCBS) IN SURFACE WATER BY GAS CHROMATOGRAPHY COUPLED TO TANDEM MASS SPECTROMETRY. [Internet] [Thesis]. Pontifical Catholic University of Rio de Janeiro; 2018. [cited 2019 Jul 16]. Available from: http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=35914.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

STOLL GC. [en] METHOD DEVELOPMENT FOR DETERMINATION OF POLYCHLORINATED BIPHENYLS (PCBS) IN SURFACE WATER BY GAS CHROMATOGRAPHY COUPLED TO TANDEM MASS SPECTROMETRY. [Thesis]. Pontifical Catholic University of Rio de Janeiro; 2018. Available from: http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=35914

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

26. Lozan, Ecaterina. Analyse quantitative de l'Estradiol dans les tissus cérébraux et le plasma de souris : Quantitative analysis of Estradiol in brain tissue and plasma of mouse.

Degree: Docteur es, Chimie analytique et environnementale, 2015, Bordeaux; Bordeaux

URL: http://www.theses.fr/2015BORD0390

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Les oestrogènes font partie de la famille des neurostéroïdes. Notamment, l’Estradiol (17β-E2) pourrait avoirdes effets bénéfiques sur certaines anomalies liées à l'âge (déclin mnésique et… (more)

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Les oestrogènes font partie de la famille des neurostéroïdes. Notamment, l’Estradiol (17β-E2) pourrait avoirdes effets bénéfiques sur certaines anomalies liées à l'âge (déclin mnésique et cognitif, maladie d'Alzheimer). Le dosagede très faibles teneurs du 17β-E2 et de ces métabolites (Estrone, Estriol), dans les tissus cérébraux et le plasma, constitueun outil indispensable pour estimer la variation de leurs niveaux avec l'âge et dans différentes pathologies.Tout d'abord, nous avons élaboré une méthode en RP-HPLC-ESI(-)-MS/MS de quantification des oestrogènes sansdérivation chimique. La sélectivité de la séparation et la sensibilité de la détection de ces molécules ont été amélioréesaprès optimisation des paramètres MRM et chromatographiques.Puis, différents agents de dérivation ont été synthétisés et évalués afin d’augmenter le taux d’ionisation pour améliorerla sensibilité de détection. Après l’analyse ESI-MS et MS/MS de onze dérivés du 17β-E2, nous nous sommes intéressésplus particulièrement au dérivé 17β-E2-Q8S.Afin de réduire les interférences, une méthode de préparation de l’échantillon biologique (tissus cérébral, plasma desouris) a été développée. Les deux dosages (sans et avec dérivation) ont été comparées en termes de sensibilité, limitesde détection et de quantification (LD et LQ), linéarité et reproductibilité. Puis, elles ont été appliquées à l’analyse deséchantillons de cerveau, d'hippocampe et de plasma prélevés sur des animaux jeunes et âgés traités avec des quantitésconnues de 17β-E2. La méthode qui nous est apparue la plus robuste est la méthode sans dérivation avec une LD de0,5 fmole.μL-1.

Estrogens are neurosteroids, especially Estradiol (17β-E2) which is considered to be the most biologicallyactive form. 17β-E2 could have positive effects on some age-associated anomalies (memory and cognitive impairment,Alzheimer's disease). For elucidating and better understanding the molecular and cellular mechanisms that underliethe effects within the brain, it is necessary to quantitate 17β-E2 and its metabolites (estrone and estriol) in brain andplasma.First, the RP-HPLC-ESI(-)-MS/MS method without derivatization was developed. The selectivity of the separationand the sensitivity of detection of the estrogens has been improved after optimization of MRM and chromatographicparameters.Secondly, the various derivatization agents were evaluated after their synthesis in order to improve the sensitivity,selectivity and signal enhancement. After studying the eleven synthesized derivatives of 17β-E2 in ESI-MS andMS/MS, promising results were obtained with the 17β-E2-Q8S derivative.A simple purification method using liquid-liquid extraction followed by C18 solid phase extraction has been optimizedin order to minimize assay interferences. The two assays (with and without derivatization) were then compared interms of efficiency, detection and quantification limits (LOD/LOQ), calibration linearity and reproducibility. Then,both methods were validated on biological samples (brain, hippocampus and plasma) collected from…

Advisors/Committee Members: Schmitter, Jean-Marie (thesis director), Shinkaruk-Poix, Svitlana (thesis director).

Subjects/Keywords: Estradiol; Neurostéroïdes; Spectrométrie de masse; SPE; HPLC; MRM; ESI; Dérivation; Estradiol; Neurosteroïds; Mass spectrometry; SPE; HPLC; MRM; ESI; Derivatization

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Lozan, E. (2015). Analyse quantitative de l'Estradiol dans les tissus cérébraux et le plasma de souris : Quantitative analysis of Estradiol in brain tissue and plasma of mouse. (Doctoral Dissertation). Bordeaux; Bordeaux. Retrieved from http://www.theses.fr/2015BORD0390

Chicago Manual of Style (16^th Edition):

Lozan, Ecaterina. “Analyse quantitative de l'Estradiol dans les tissus cérébraux et le plasma de souris : Quantitative analysis of Estradiol in brain tissue and plasma of mouse.” 2015. Doctoral Dissertation, Bordeaux; Bordeaux. Accessed July 16, 2019. http://www.theses.fr/2015BORD0390.

MLA Handbook (7^th Edition):

Lozan, Ecaterina. “Analyse quantitative de l'Estradiol dans les tissus cérébraux et le plasma de souris : Quantitative analysis of Estradiol in brain tissue and plasma of mouse.” 2015. Web. 16 Jul 2019.

Vancouver:

Lozan E. Analyse quantitative de l'Estradiol dans les tissus cérébraux et le plasma de souris : Quantitative analysis of Estradiol in brain tissue and plasma of mouse. [Internet] [Doctoral dissertation]. Bordeaux; Bordeaux; 2015. [cited 2019 Jul 16]. Available from: http://www.theses.fr/2015BORD0390.

Council of Science Editors:

Lozan E. Analyse quantitative de l'Estradiol dans les tissus cérébraux et le plasma de souris : Quantitative analysis of Estradiol in brain tissue and plasma of mouse. [Doctoral Dissertation]. Bordeaux; Bordeaux; 2015. Available from: http://www.theses.fr/2015BORD0390

27. Pérez Arquillué, María Consolación. Estudio de la contaminación de la miel por residuos procedentes de tratamientos sanitarios en apicultura.

Degree: 2011, Universidad de Zaragoza, Universidad de Zaragoza

URL: http://zaguan.unizar.es/record/1902

► Resumen: En esta tesis se han desarrollado dos métodos de análisis multirresidual para la detección y cuantificación de residuos de antibióticos y acaricidas de síntesis… (more)

Subjects/Keywords: HPLC; SPE; Acaricide; Antibiotic; Aragón; Apicultura; Riesgo sanitario; Degradación; Miel; Validación; HPLC; SPE; Antibiótico; Acaricida; Validation; Honey; Degradation; Sanitary risk; Apiculture

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Pérez Arquillué, M. C. (2011). Estudio de la contaminación de la miel por residuos procedentes de tratamientos sanitarios en apicultura. (Thesis). Universidad de Zaragoza, Universidad de Zaragoza. Retrieved from http://zaguan.unizar.es/record/1902

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Pérez Arquillué, María Consolación. “Estudio de la contaminación de la miel por residuos procedentes de tratamientos sanitarios en apicultura.” 2011. Thesis, Universidad de Zaragoza, Universidad de Zaragoza. Accessed July 16, 2019. http://zaguan.unizar.es/record/1902.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Pérez Arquillué, María Consolación. “Estudio de la contaminación de la miel por residuos procedentes de tratamientos sanitarios en apicultura.” 2011. Web. 16 Jul 2019.

Vancouver:

Pérez Arquillué MC. Estudio de la contaminación de la miel por residuos procedentes de tratamientos sanitarios en apicultura. [Internet] [Thesis]. Universidad de Zaragoza, Universidad de Zaragoza; 2011. [cited 2019 Jul 16]. Available from: http://zaguan.unizar.es/record/1902.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Pérez Arquillué MC. Estudio de la contaminación de la miel por residuos procedentes de tratamientos sanitarios en apicultura. [Thesis]. Universidad de Zaragoza, Universidad de Zaragoza; 2011. Available from: http://zaguan.unizar.es/record/1902

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Vanderbilt University

28. Enders, Jeffrey Richard. Structural mass spectrometry strategies for systems biology.

Degree: PhD, Chemistry, 2012, Vanderbilt University

URL: http://etd.library.vanderbilt.edu/available/etd-09072012-084324/ ;

► Systems biology seeks to describe the function of a biological system using a holistic, multiscale approach. This approach encompasses the analyses of molecular classes such… (more)

▼ Systems biology seeks to describe the function of a biological system using a holistic, multiscale approach. This approach encompasses the analyses of molecular classes such as the genome, transcriptome, proteome, and metabolome (among others) of a biological system. Systems biology asserts that while understanding genes and proteins is important, the most important aspects going forward are more closely related to the systemâs network structure and network dynamics. There is a substantial need for improved techniques for coupling the system on which the analysis is being performed (i.e., the organism) with the detection instrumentation (i.e., the ion mobility-mass spectrometer). Advances in systems biology measurements which focus on improved dynamic detection strategies are presented in this work. Our preliminary research shows the potential for this system to provide temporally resolved systems biology data directly from complex cellular culture populations. Precise and expedient control of the microenvironment of the MTNP with regards to input concentrations (i.e., stimuli) has been demonstrated and shows that biomolecular temporal events on the order of 5 minutes are observable with this platform. This accomplishment is critical for future stimulus/response experiments. The broad and temporally accurate detection capabilities of IM-MS have been demonstrated for complex biological samples originating from a sustained yeast cellular culture inside of a microfluidic device. The potential of the combination of microfluidics and IM-MS has been shown by the sheer number of analytes detected from a simple Jurkat cell population. This Jurkat cell data illustrates the abundance of secreted material which is observable with the use of ion mobility-mass spectrometry. Additionally, we have reviewed a study on cocaine metabolism in Jurkat cells which benchmarks the platform while also demonstrating its potential for discovery-driven research. Advisors/Committee Members: David E. Cliffel (committee member), Brian O. Bachmann (committee member), John A. McLean (chair), John P. Wikswo (committee member).

Subjects/Keywords: MS; network dynamics; cellular dynamics; systems biology; mass spectrometry; ion mobility; microfluidics; solid phase extraction; IM; SPE; online SPE

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Enders, J. R. (2012). Structural mass spectrometry strategies for systems biology. (Doctoral Dissertation). Vanderbilt University. Retrieved from http://etd.library.vanderbilt.edu/available/etd-09072012-084324/ ;

Chicago Manual of Style (16^th Edition):

Enders, Jeffrey Richard. “Structural mass spectrometry strategies for systems biology.” 2012. Doctoral Dissertation, Vanderbilt University. Accessed July 16, 2019. http://etd.library.vanderbilt.edu/available/etd-09072012-084324/ ;.

MLA Handbook (7^th Edition):

Enders, Jeffrey Richard. “Structural mass spectrometry strategies for systems biology.” 2012. Web. 16 Jul 2019.

Vancouver:

Enders JR. Structural mass spectrometry strategies for systems biology. [Internet] [Doctoral dissertation]. Vanderbilt University; 2012. [cited 2019 Jul 16]. Available from: http://etd.library.vanderbilt.edu/available/etd-09072012-084324/ ;.

Council of Science Editors:

Enders JR. Structural mass spectrometry strategies for systems biology. [Doctoral Dissertation]. Vanderbilt University; 2012. Available from: http://etd.library.vanderbilt.edu/available/etd-09072012-084324/ ;

Brno University of Technology

29. Grulichová, Hana. Extrakce vybraných flavonoidů bezu černého pro potravinářské účely .

Degree: 2010, Brno University of Technology

URL: http://hdl.handle.net/11012/7238

► Tato diplomová práce se zabývá stanovením množství rutinu a kvercetinu v listech a ve větvičkách různých druhů bezu černého. Zjištěné hodnoty byly porovnány s významnými… (more)

▼ Tato diplomová práce se zabývá stanovením množství rutinu a kvercetinu v listech a ve větvičkách různých druhů bezu černého. Zjištěné hodnoty byly porovnány s významnými zdroji těchto látek. Pro získání látek z rostlinné matrice byla použita medota extrakce rozpouštědlem za zvýšeného tlaku a teploty (PSE – pressurized solvent extraction, PHWE – pressurized hot water extraction). Podmínky použité pro extrakci pomocí PSE byly teplota 120 °C, tlak 150 barů a 3 cykly po 5 minutách. U extrakce pomocí PHWE byla pro rutin z listů použita teplota 80 °C, tlak 150 barů, 3 cykly po 5 minutách a pro kvercetin se použila teplota 100 °C, ostatní podmínky se nastaveny stejně. Analýza rutinu a kvercetinu byla provedla pomocí vysoce účinné kapalinové chromatografie s použitím detektoru diodovým polem (HPLC-DAD), ale byla sledována pouze vlnová délka 360 nm. Látky byly separované přes kolonu SUPELCOSILTM LC 8DB (velikost částic sorbentu 5 µm; rozměry kolony 250x4,6 mm). Mobilní fáze byla směs methanolu: vody: kyseliny mravenčí v poměru 36: 61,5: 2,5 při pH 2,17 2,28, nastavený průtok byl 0, 7 ml/min a velikost dávkovací smyčky 10µl. Nejvíce rutinu bylo obsaženo v listech planého druhu bezu černého při extrakci methanolem i vodou. Vodou byla extrakce účinnější a bylo získáno 5, 58 mg rutinu z jednoho gramu vzorku planého bezu černého. Nejnižší množství bylo stanoveno v Sambucus nigra Körsör, kde bylo pouze 0,13 mg/g (při extrakci vodou). Kvercetin nebyl v listech stanoven u žádné druhu bezu černého. Ve větvích se nacházely oba stanovované flavonoidy. Rutin byl ve velmi malém množství stanoven v planém druhu, ale ve šlechtěných odrůdách bylo stanoveno významné množství této látky. Naopak kvercetin, který se po stanovování optimálních podmínek pro extrakci zdál být významnějším z hlediska množství, nebyl v některých šlechtěných odrůdách detekován. Největší množství kvercetinu se nacházelo v planém druhu bezu černého, a to 0,24 mg/g. Největší množství rutinu bylo stanoveno v Sambucus nigra Albida, 2,33 mg/g.; Amount of rutin and quercetin in bark and leaves from different type of Sambucus nigra was determined in this diploma thesis. Records of amounts were compared with amounts in significant sources of these flavonoids. Matters from raw matrix were obtained with pressurized solvent extraction (PSE) and pressurized hot water extraction (PHWE). There was use temperature 120°C, pressure 150 bar, three times 5-min cycles for PSE. There were used 80°C, 150 bar, three 5-min cycles for rutin extracted with PHWE and the same condition were used for extraction of quercetin only the temperature was changed to 100 °C. Analysis of rutin and quercetin were carry out high performance liquid chromatography (HPLC) with diode array detection (DAD), where was used SUPELCOSILTM LC 8DB column (5µm; 250 x 4.6 mm). Methanol: water: formic acid (36: 61.5: 2.5, pH 2.17 2.28) was used like a mobile phase. The flow of the mobile phase was set up 0.7 ml/min. Size of sample was 10 µl. The most amount of rutin was determined in the leaves of wild kind of Sambucus… Advisors/Committee Members: Vespalcová, Milena (advisor).

Subjects/Keywords: PSE; PHWE; SPE; HPLC; rutin; kvercetin; bez černý; PSE; PHWE; SPE; HPLC; rutin; quercetin; Sambucus nigra

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Grulichová, H. (2010). Extrakce vybraných flavonoidů bezu černého pro potravinářské účely . (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/7238

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Grulichová, Hana. “Extrakce vybraných flavonoidů bezu černého pro potravinářské účely .” 2010. Thesis, Brno University of Technology. Accessed July 16, 2019. http://hdl.handle.net/11012/7238.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Grulichová, Hana. “Extrakce vybraných flavonoidů bezu černého pro potravinářské účely .” 2010. Web. 16 Jul 2019.

Vancouver:

Grulichová H. Extrakce vybraných flavonoidů bezu černého pro potravinářské účely . [Internet] [Thesis]. Brno University of Technology; 2010. [cited 2019 Jul 16]. Available from: http://hdl.handle.net/11012/7238.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Grulichová H. Extrakce vybraných flavonoidů bezu černého pro potravinářské účely . [Thesis]. Brno University of Technology; 2010. Available from: http://hdl.handle.net/11012/7238

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Brno University of Technology

30. Kosárová, Hedvika. Aplikace prekoncentračních/separačních technik pro stanovení platiny v životním prostředí atomovou spektrometrií .

Degree: 2013, Brno University of Technology

URL: http://hdl.handle.net/11012/21056

► Tato diplomová práce se zabývá optimalizací podmínek pro stanovení platiny metodou elektrotermické atomové absorpční spektrometrie. V teoretické části je popsán výskyt platiny v různých složkách… (more)

Subjects/Keywords: Platina; atomová absorpční spektrometrie; SPE; mikrovlnná extrakce; automobilový katalyzátor; Platinum; atomic absorption spektrometry; SPE; microwave extraction; catalytic converter

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Kosárová, H. (2013). Aplikace prekoncentračních/separačních technik pro stanovení platiny v životním prostředí atomovou spektrometrií . (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/21056

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Kosárová, Hedvika. “Aplikace prekoncentračních/separačních technik pro stanovení platiny v životním prostředí atomovou spektrometrií .” 2013. Thesis, Brno University of Technology. Accessed July 16, 2019. http://hdl.handle.net/11012/21056.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Kosárová, Hedvika. “Aplikace prekoncentračních/separačních technik pro stanovení platiny v životním prostředí atomovou spektrometrií .” 2013. Web. 16 Jul 2019.

Vancouver:

Kosárová H. Aplikace prekoncentračních/separačních technik pro stanovení platiny v životním prostředí atomovou spektrometrií . [Internet] [Thesis]. Brno University of Technology; 2013. [cited 2019 Jul 16]. Available from: http://hdl.handle.net/11012/21056.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Kosárová H. Aplikace prekoncentračních/separačních technik pro stanovení platiny v životním prostředí atomovou spektrometrií . [Thesis]. Brno University of Technology; 2013. Available from: http://hdl.handle.net/11012/21056

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

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Open Access Theses and Dissertations