subject:(ICP MS)

Oregon State University

1. Loewen, Matthew W. Analysis of semi-volatile trace metals in basaltic glass by LA-ICP-MS.

Degree: MS, Geology, 2011, Oregon State University

URL: http://hdl.handle.net/1957/21822

► Semi-volatile trace metals (e.g., Cd, Sn, Pb, Zn, Cu, Mo) have been analyzed by using laser ablation ICP-MS in a number of silicate glasses (GSE-1G,… (more)

▼ Semi-volatile trace metals (e.g., Cd, Sn, Pb, Zn, Cu, Mo) have been analyzed by using laser ablation ICP-MS in a number of silicate glasses (GSE-1G, GSD-1G, NIST 610, NIST 612, BCR-2G, BHVO-2G). Our work investigates and highlights sources of uncertainty in the analysis of semi-volatile metals using LA-ICP-MS. We identify within- cell transport fractionation as a primary source of uncertainty in these analyses. We found no evidence for significant fractionation of elements on the basis of volatility over typical 45 second ablation intervals. However, systematic fractionation of up to 20% was found for a number of siderophile and chalcophile trace elements as well as volatile lithophile elements when comparing analyses from different locations with a simple single-volume ablation chamber. Some fractionation was also observed for analyses in GSE-1G that intersected fractures or cracks in the glass, although overall GSE-1G appears to be homogeneous with respect to semi-volatile element distributions at the ~10 % level. Calibration using GSE-1G produces more accurate results on basaltic glass compositions than NIST 610. This work thus confirms the suitability of GSE-1G as a calibration standard for analysis of semi-volatile metals in mafic composition glasses. This thesis also reports major and trace element data for glass, olivine, and olivine-hosted melt inclusions from the 1959 eruption of Kilauea Iki, Hawaii. Major element compositions of glasses match the results of earlier studies and suggest that dominant fractionation of olivine + Cr-spinel and secondary mixing between two magma batches control compositional variations. Melt inclusions trap melts with high sulfur concentrations (~0.1-0.15 wt.%) suggestive of a melt at or near sulfide saturation, while matrix glass is highly degassed. Lithophile trace element variations more clearly illustrate the effects of mixing at a late stage of magmatic development, and require magmas with two distinct mantle source regions and/or different degrees of partial melt. A number of non-traditional volatile trace elements were also analyzed including those with a range of volatility and geochemical affinity. Of these, most (e.g., Sn, Mo, Pb) display typical incompatible behavior while others appear to be compatible in known phases (primarily olivine: Zn, Co). Copper concentrations cannot be explained by removal of major phenocryst phases. Scatter in Cu concentrations could be achieved by either variable volatile mobility at depth or removal with a Cu-sulfide phase (either fractionated or residual). Previous studies of rare sulfides present in the 1959 eruption and more abundant sulfides crystallized in the lava lake suggest high Cu (>40 wt.%) in the sulfides. In this case even removal of a small amount of sulfide (<<1% by volume) could strongly deplete the melt of Cu while having little affect on other metals since their presence was not observed in the sulfides. There is no evidence for loss of volatile or semi-volatile trace metals during subaerial degassing. Advisors/Committee Members: Kent, Adam (advisor), Dilles, John (committee member).

Subjects/Keywords: LA-ICP-MS

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APA (6^th Edition):

Loewen, M. W. (2011). Analysis of semi-volatile trace metals in basaltic glass by LA-ICP-MS. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/21822

Chicago Manual of Style (16^th Edition):

Loewen, Matthew W. “Analysis of semi-volatile trace metals in basaltic glass by LA-ICP-MS.” 2011. Masters Thesis, Oregon State University. Accessed August 18, 2019. http://hdl.handle.net/1957/21822.

MLA Handbook (7^th Edition):

Loewen, Matthew W. “Analysis of semi-volatile trace metals in basaltic glass by LA-ICP-MS.” 2011. Web. 18 Aug 2019.

Vancouver:

Loewen MW. Analysis of semi-volatile trace metals in basaltic glass by LA-ICP-MS. [Internet] [Masters thesis]. Oregon State University; 2011. [cited 2019 Aug 18]. Available from: http://hdl.handle.net/1957/21822.

Council of Science Editors:

Loewen MW. Analysis of semi-volatile trace metals in basaltic glass by LA-ICP-MS. [Masters Thesis]. Oregon State University; 2011. Available from: http://hdl.handle.net/1957/21822

2. Petersen, Jassin. Development of paleo-oxygenation proxies : new insights into Mn/Ca ratios and pore patterns of benthic foraminiferal tests : Développement de proxies de paléo-oxygénation basés sur la géochimie des foraminifères benthiques.

Degree: Docteur es, Sciences de la Terre, 2017, Nantes

URL: http://www.theses.fr/2017NANT4022

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L’objectif principal de cette thèse était de comprendre comment la variabilité temporelle et spatiale de l’oxygénation de l’eau de fond est enregistrée dans le test… (more)

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L’objectif principal de cette thèse était de comprendre comment la variabilité temporelle et spatiale de l’oxygénation de l’eau de fond est enregistrée dans le test des foraminifères benthiques, à travers le rapport Mn/Ca et les paramètres des pores. Pour atteindre cet objectif, Ammonia tepida, un groupe d’espèces pseudocryptiques, du Grevelingenmeer (Pays-Bas) a été principalement étudié. A ce site, le gradient bathymétrique est accompagné par une augmentation de la durée et de l’intensité de l’hypoxie/anoxie saisonnière qui influence indirectement le rapport Mn/Ca et directement la porosité d’A. tepida. Notre étude de la Zone à Oxygène Minimum de la Mer d’Arabie suggère la présence d’un important biais diagénétique dans le signal Mn/Ca lors de la transition d’un foraminifère vivant vers un test fossile. En conclusion de cette thèse, la composition Mn/Ca d’un test des foraminifères benthiques dans notre zone d’étude semble être influencée par trois facteurs temporelles 1) l’oxygénation du milieu benthique et la position de la zone redox enrichie en Mn2+ dans l’eau interstitielle, 2) l’activité des bactéries câblées et 3) la période de calcification, ainsi que par trois facteurs spatiaux qui déterminent la position du foraminifère par rapport à la zone de Mn2+ lors de la calcification 4) le microhabitat, 5) la migration verticale des foraminifères et 6) la bioturbation de la macrofaune. Dans le Grevelingenmeer, la porosité d’A. tepida montre une relation avec l’oxygénation. Le couplage entre porosité et oxygénation semble être direct, une plus grande porosité permettant des échanges de gaz plus intensifs. Au contraire, la relation entre le rapport Mn/Ca et l’oxygénation serait plus indirecte, puisque celle-ci est également influencée par l’activité microbienne. L’utilisation simultanée de ces deux proxies totalement indépendants nous semble prometteuse, spécialement parce que ces proxies réagissent à différentes échelles de temps.

The main objective of this thesis was to investigate how the temporal and spatial variability of bottom water oxygenation is recorded in the benthic foraminiferal test, by the Mn/Ca ratio, and by the pore parameters. To achieve this objective, Ammonia tepida, a group of pseudocryptic species, of the Lake Grevelingen (Netherlands) was mainly studied. At this site, the depth gradient is accompanied by an increase in duration and intensity of seasonal hypoxia/anoxia which indirectly influences the Mn/Ca ratio and directly the porosity of A. tepida. Our study of the Oxygen Minimum Zone in the Arabian Sea suggests the presence of a significant diagenetic effect during the transition of a Mn/Ca signal from a living foraminifer to a fossil signal. In conclusion of this PhD research, the Mn/Ca signal of a benthic foraminiferal test seems to be influenced by three temporal factors: 1) the oxygenation of the benthic ecosystem and the position of the Mn2+ zone in the interstitial water, 2) the cable bacteria activity, and 3) the period of calcification, as well as by three spatial factors which…

Advisors/Committee Members: Jorissen, Frans J. (thesis director), Bézos, Antoine (thesis director), Barras, Christine (thesis director).

Subjects/Keywords: LA-ICP-MS

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APA (6^th Edition):

Petersen, J. (2017). Development of paleo-oxygenation proxies : new insights into Mn/Ca ratios and pore patterns of benthic foraminiferal tests : Développement de proxies de paléo-oxygénation basés sur la géochimie des foraminifères benthiques. (Doctoral Dissertation). Nantes. Retrieved from http://www.theses.fr/2017NANT4022

Chicago Manual of Style (16^th Edition):

Petersen, Jassin. “Development of paleo-oxygenation proxies : new insights into Mn/Ca ratios and pore patterns of benthic foraminiferal tests : Développement de proxies de paléo-oxygénation basés sur la géochimie des foraminifères benthiques.” 2017. Doctoral Dissertation, Nantes. Accessed August 18, 2019. http://www.theses.fr/2017NANT4022.

MLA Handbook (7^th Edition):

Petersen, Jassin. “Development of paleo-oxygenation proxies : new insights into Mn/Ca ratios and pore patterns of benthic foraminiferal tests : Développement de proxies de paléo-oxygénation basés sur la géochimie des foraminifères benthiques.” 2017. Web. 18 Aug 2019.

Vancouver:

Petersen J. Development of paleo-oxygenation proxies : new insights into Mn/Ca ratios and pore patterns of benthic foraminiferal tests : Développement de proxies de paléo-oxygénation basés sur la géochimie des foraminifères benthiques. [Internet] [Doctoral dissertation]. Nantes; 2017. [cited 2019 Aug 18]. Available from: http://www.theses.fr/2017NANT4022.

Council of Science Editors:

Petersen J. Development of paleo-oxygenation proxies : new insights into Mn/Ca ratios and pore patterns of benthic foraminiferal tests : Développement de proxies de paléo-oxygénation basés sur la géochimie des foraminifères benthiques. [Doctoral Dissertation]. Nantes; 2017. Available from: http://www.theses.fr/2017NANT4022

University of Debrecen

3. Várallyay, Szilvia. Mérési paraméterek és mintaelőkészítési módszerek vizsgálata, tej elemtartalom meghatározásához ICP technikákkal .

Degree: DE – ATC – Mezőgazdaság- Élelmiszertudományi és Környezetgazdálkodási Kar, 2013, University of Debrecen

URL: http://hdl.handle.net/2437/176922

► Az egyik legértékesebb élelmiszerünk a tej, mely megfelelő arányban és könnyen emészthető formában tartalmazza a kielégítő táplálkozáshoz nélkülözhetetlen fehérjéket, esszenciális aminosavakat, szénhidrátokat, zsírokat, vitaminokat, valamint… (more)

▼ Az egyik legértékesebb élelmiszerünk a tej, mely megfelelő arányban és könnyen emészthető formában tartalmazza a kielégítő táplálkozáshoz nélkülözhetetlen fehérjéket, esszenciális aminosavakat, szénhidrátokat, zsírokat, vitaminokat, valamint ásványi anyagokat.Az élelmiszerekben található ásványi alkotók folyamatos monitorozása kiemelten fontos élelmezés-egészségügyi, élelmiszerbiztonsági feladatot képez. Az induktív csatolású plazma optikai emissziós spektrometria (ICP-OES), valamint az induktív csatolású plazma tömegspektrometria (ICP-MS) potenciálisan kínál viszonylag gyors, egyszerű módszert a különböző ásványi alkotók mennyiségi vizsgálatára. Az elemanalitikai célú műszeres mérést általában előkészítő műveletek előzik meg, melyek megkezdése előtt kiemelt figyelmet kell fordítani a vizsgálni kívánt elemre, elemekre vonatkozó optimális mintaelőkészítési módszer megválasztására, hiszen a nem megfelelő módszer használata esetén megváltozhat a vizsgálandó minta elemösszetétele. Ennek köszönhetően a mérési eredmény pontossága kifogásolható. A műszeres analitikában a megfelelően pontos mérés egyik további feltétele a vizsgálatokhoz alkalmazott készülékek mérési paramétereinek optimális beállítása. Az előzőekben leírtakból adódóan kutatómunkám az ICP-OES és az ICP-MS mérési paraméterének vizsgálatára, valamint a különböző mintaelőkészítési módokat összehasonlítva, adott elem méréséhez optimális mintaelőkészítési módszer meghatározására irányult. A munkám során vizsgált mintaelőkészítési módszerek a hamvasztás, a nyílt rendszerben atmoszférikus nyomáson, valamint zárt térben mikrohullámú energiaközléssel végzett nedves roncsolás, illetve közvetlen hígítás volt. Az ICP-MS mérési paraméterének optimalizálásaként vizsgáltam, hogy mely izotópon/izotópokon, ICP-OES esetén pedig, hogy milyen hullámhosszúságú vonalon érdemes a különböző elemek koncentrációját meghatározni. Advisors/Committee Members: Kovács, Béla Róbert (advisor).

Subjects/Keywords: tej; ICP-MS; ICP-OES; mérési paraméterek

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

APA (6^th Edition):

Várallyay, S. (2013). Mérési paraméterek és mintaelőkészítési módszerek vizsgálata, tej elemtartalom meghatározásához ICP technikákkal . (Thesis). University of Debrecen. Retrieved from http://hdl.handle.net/2437/176922

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):

Várallyay, Szilvia. “Mérési paraméterek és mintaelőkészítési módszerek vizsgálata, tej elemtartalom meghatározásához ICP technikákkal .” 2013. Thesis, University of Debrecen. Accessed August 18, 2019. http://hdl.handle.net/2437/176922.

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

MLA Handbook (7^th Edition):

Várallyay, Szilvia. “Mérési paraméterek és mintaelőkészítési módszerek vizsgálata, tej elemtartalom meghatározásához ICP technikákkal .” 2013. Web. 18 Aug 2019.

Vancouver:

Várallyay S. Mérési paraméterek és mintaelőkészítési módszerek vizsgálata, tej elemtartalom meghatározásához ICP technikákkal . [Internet] [Thesis]. University of Debrecen; 2013. [cited 2019 Aug 18]. Available from: http://hdl.handle.net/2437/176922.

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

Council of Science Editors:

Várallyay S. Mérési paraméterek és mintaelőkészítési módszerek vizsgálata, tej elemtartalom meghatározásához ICP technikákkal . [Thesis]. University of Debrecen; 2013. Available from: http://hdl.handle.net/2437/176922

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

Brno University of Technology

4. 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 August 18, 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. 18 Aug 2019.

Vancouver:

Moos M. Prekoncentrační techniky pro stanovení uranu s využitím modifikovaných sorbentů. [Internet] [Thesis]. Brno University of Technology; 2011. [cited 2019 Aug 18]. 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

5. Rodrigues, Jairo Lisboa. Avaliação de técnicas acopladas à espectrometria de massas com plasma (ICP-MS) visando o fracionamento e a especiação química de mercúrio em sangue e plasma.

Degree: PhD, Toxicologia, 2010, University of São Paulo

URL: http://www.teses.usp.br/teses/disponiveis/60/60134/tde-13082010-100725/ ;

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O Mercúrio (Hg) é um dos mais tóxicos poluentes do meio ambiente. Ele existe basicamente em três formas: Mercúrio elementar (Hg0), ou Hg metálico, mercúrio… (more)

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O Mercúrio (Hg) é um dos mais tóxicos poluentes do meio ambiente. Ele existe basicamente em três formas: Mercúrio elementar (Hg0), ou Hg metálico, mercúrio inorgânico (Hg-i), principalmente o cloreto mercúrico e o mercúrio orgânico (Hg-o), representado principalmente pelo metilmercúrio (MeHg) e etilmercúrio (EtHg), sendo que as formas orgânicas do Hg são mais tóxicas. Sendo assim, é de suma importância que se tenha métodos de fracionamento (Hg t, Hg-i e Hg-o pela diferença) e de especiação de mercúrio (Hg-i, MeHg, EtHg) para diferenciação das espécies de mercúrio em matrizes biológicas. Neste sentido, o presente trabalho teve como objetivos o desenvolvimento de três métodos analíticos rápidos, simples e sensíveis para: i) fracionamento entre Hg-t e Hg-i em sangue/plasma (Hg-o pela diferença) utilizando sistema de geração de vapor frio em linha com ICP-MS (CV ICP-MS); ii) especiação de Hg em amostras de sangue e plasma utilizando o acoplamento HPLC-ICP-MS; iii) especiação de Hg em amostras de sangue utilizando o acoplamento GC-ICP-MS. No método de fracionamento de mercúrio foi feito o preparo de amostras utilizando hidróxido de tetrametilamônio (TMAH) à temperatura ambiente. No método de especiação por HPLC-ICP-MS foi feita a extração das espécies utilizando banho ultrassônico, ao passo que no método GC-ICP-MS foi feita a extração das espécies assistida por microondas. O método CV ICP-MS foi comparado com a geração de vapor utilizando absorção atômica (CV AAS) não tendo diferença estatística entre os dois métodos. Para validação dos métodos foi utilizado Material de Referência Certificado (NIST 966) e outros Materiais de Referência. Os métodos foram aplicados para análise de amostras de sangue de populações Ribeirinhas da Amazônia brasileira expostas ao mercúrio. Os métodos demonstraram ser simples e rápidos, podendo facilmente serem implantados em rotina de laboratórios clínicos.

Mercury (Hg) is one of the most toxic environmental pollutants. It exists primarily in three forms: elemental mercury (Hg0), or metallic mercury, inorganic mercury (Hg-i), particularly mercuric chloride and organic mercury (Hg-o), mainly represented by methylmercury (MeHg) and ethylmercury (EtHg), and the organic forms of mercury are more toxic than the inorganic ones. Then, it is very important the development of simple and fast methods for mercury fractionation (T-Hg, Hg-i and Hg-o by the difference) or speciation (Hg-i, MeHg, EtHg) in biological samples. Then, the aims of this work were to evaluate three analytical methods for: i) mercury fractionation in blood/plasma samples (Hg-t, Hg-i and Hg-o by difference) by using a ICP-MS on line coupled to a cold-vapor generation system (CV ICP-MS), ii) Hg speciation in blood and plasma by using LC coupled to ICP-MS; iii) Hg speciation in blood samples with the use of GC coupled to ICP-MS. For the fractionation method, samples were previously incubated with tetramethylammonium hydroxide (TMAH) at room temperature. On the other hand, for the speciation of Hg in blood/plasma by using HPLC-ICP-MS…

Advisors/Committee Members: Barbosa Junior, Fernando.

Subjects/Keywords: blood; cold vapor; GC-ICP-MS; GC-ICP-MS; HPLC-ICP-MS; HPLC-ICP-MS; mercúrio; mercury; sangue; speciation; vapor frio

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

APA (6^th Edition):

Rodrigues, J. L. (2010). Avaliação de técnicas acopladas à espectrometria de massas com plasma (ICP-MS) visando o fracionamento e a especiação química de mercúrio em sangue e plasma. (Doctoral Dissertation). University of São Paulo. Retrieved from http://www.teses.usp.br/teses/disponiveis/60/60134/tde-13082010-100725/ ;

Chicago Manual of Style (16^th Edition):

Rodrigues, Jairo Lisboa. “Avaliação de técnicas acopladas à espectrometria de massas com plasma (ICP-MS) visando o fracionamento e a especiação química de mercúrio em sangue e plasma.” 2010. Doctoral Dissertation, University of São Paulo. Accessed August 18, 2019. http://www.teses.usp.br/teses/disponiveis/60/60134/tde-13082010-100725/ ;.

MLA Handbook (7^th Edition):

Rodrigues, Jairo Lisboa. “Avaliação de técnicas acopladas à espectrometria de massas com plasma (ICP-MS) visando o fracionamento e a especiação química de mercúrio em sangue e plasma.” 2010. Web. 18 Aug 2019.

Vancouver:

Rodrigues JL. Avaliação de técnicas acopladas à espectrometria de massas com plasma (ICP-MS) visando o fracionamento e a especiação química de mercúrio em sangue e plasma. [Internet] [Doctoral dissertation]. University of São Paulo; 2010. [cited 2019 Aug 18]. Available from: http://www.teses.usp.br/teses/disponiveis/60/60134/tde-13082010-100725/ ;.

Council of Science Editors:

Rodrigues JL. Avaliação de técnicas acopladas à espectrometria de massas com plasma (ICP-MS) visando o fracionamento e a especiação química de mercúrio em sangue e plasma. [Doctoral Dissertation]. University of São Paulo; 2010. Available from: http://www.teses.usp.br/teses/disponiveis/60/60134/tde-13082010-100725/ ;

NSYSU

6. Wang, Shiao-ming. 1.Direct determination of cadmium, antimony and mercury in powder food by SS-FIA-CVG-ICP-MS with slurry sample 2.Determination of arsenic species in water sample by HPLC-CVG-ICP-MS.

Degree: Master, Chemistry, 2013, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0704113-141931

► Chemical vapor generation (CVG), initially developed by Braman and Foreback in 1973. The analysis react with reduction in acid and produce hydride compounds. Hydride compounds… (more)

▼ Chemical vapor generation (CVG), initially developed by Braman and Foreback in 1973. The analysis react with reduction in acid and produce hydride compounds. Hydride compounds have much Sample transport efficiency than nebulizer, so it is so sensitive that the method can lower limit detection. Using CVG system can separate analysis from matrix by gas-liquid separator and avoid spectra interfere. First study using slurry sampling as pretreatment, and determination cadmium, antimony and mercury by SS-FIA-CVG-ICP-MS. To get best signal, testing concentration of thiourea, cobalt, HCl and NaBH4. In addition, testing reagent flow rate and volume of mixing coil, too.Then, we compare slope of external calibration and standard addition to ensure effect by matrix on chemical vapor generation. We choose standard addition and isotope dilution as quantitative method. The experimental method detection limits for cadmium, antimony and mercury are in the range of 0.1-0.15 Î¼g kg-1 . To avoid various species of antimony and mercury affect accuracy of quantitative, we compare chemical vapor generation of Sb(III) and Sb(V) as well as Hg(II) and CH3Hg(II). The accuracy of the method is evaluated by analyzing a rice flour certified reference material (NIST 1568a). Second study is a method employing a vapor generation system and LC combines with inductively coupled plasma mass spectrometry (LC-ICP-MS) is presented for the determination of arsenic species in water sample. To get best signal, testing concentration of thiourea, HCl and NaBH4. In addition, testing reagent flow rate and volume of mixing coil, too. To avoid 40Ar35Cl interferes with 75As, we choose H2 as reaction gas in DRC system to transfer charge from polyatomic ions 40Ar35Cl+ and get accurate quantitative. We use ion exchange chromatography to separate As(III), DMA, MMA, As(V).The effency of the mobile phase, ammonium carbonate, is evaluated for LC separation of As(III), DMA, MMA, As(V). The sensitivity, detection limits of LC-ICP-MS with a vapor generation is better than LC-ICP-MS with pneumatic nebulization. To get best signal by LC-CVG-ICP-MS, testing pH, concentration of salt and flow rate of LC. The accuracy of the method is evaluated by analyzing riverine water certified reference material (SLRS-4) and estuarine water certified reference material (SLEW-3). Advisors/Committee Members: Shou-Mei Wu (chair), Wei-Lung Tseng (chair), Shiuh-jen Jiang (committee member).

Subjects/Keywords: CVG; ICP-MS; HPLC; DRC

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

APA (6^th Edition):

Wang, S. (2013). 1.Direct determination of cadmium, antimony and mercury in powder food by SS-FIA-CVG-ICP-MS with slurry sample 2.Determination of arsenic species in water sample by HPLC-CVG-ICP-MS. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0704113-141931

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):

Wang, Shiao-ming. “1.Direct determination of cadmium, antimony and mercury in powder food by SS-FIA-CVG-ICP-MS with slurry sample 2.Determination of arsenic species in water sample by HPLC-CVG-ICP-MS.” 2013. Thesis, NSYSU. Accessed August 18, 2019. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0704113-141931.

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

MLA Handbook (7^th Edition):

Wang, Shiao-ming. “1.Direct determination of cadmium, antimony and mercury in powder food by SS-FIA-CVG-ICP-MS with slurry sample 2.Determination of arsenic species in water sample by HPLC-CVG-ICP-MS.” 2013. Web. 18 Aug 2019.

Vancouver:

Wang S. 1.Direct determination of cadmium, antimony and mercury in powder food by SS-FIA-CVG-ICP-MS with slurry sample 2.Determination of arsenic species in water sample by HPLC-CVG-ICP-MS. [Internet] [Thesis]. NSYSU; 2013. [cited 2019 Aug 18]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0704113-141931.

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

Council of Science Editors:

Wang S. 1.Direct determination of cadmium, antimony and mercury in powder food by SS-FIA-CVG-ICP-MS with slurry sample 2.Determination of arsenic species in water sample by HPLC-CVG-ICP-MS. [Thesis]. NSYSU; 2013. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0704113-141931

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

NSYSU

7. Liu, Yin-hsiao. Determination of arsenic species in seaweeds and chromium species by HPLC-ICP-MS.

Degree: Master, Chemistry, 2014, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0622114-215059

► In the first study, speciation of arsenic in seaweeds was carried out using ion chromatography (IC) for separation and inductively coupled mass spectrometry (ICP-MS) for… (more)

▼ In the first study, speciation of arsenic in seaweeds was carried out using ion chromatography (IC) for separation and inductively coupled mass spectrometry (ICP-MS) for detection. The arsenic species studied were arsenite [As(III)], arsenate [As(V)], monomethylarsonic acid (MMA), dimethylarsinic acid (DMA), arsenobeta- ine (AsB), arsenocholine (AsC), OH-arsenoribose (OH-AsR), PO4-arsenoribose (PO4- AsR) , SO3H-arsenoribose (SO3H - AsR), and trialkylarsonioribosides (Trialkyl-AsR). Chromatographic separation of all the species was achieved in <19 min in gradient elution mode using (NH4)2CO3 at pH 8.7. Since there was not standard of arsenosugar, in the experiment used extraction of Laminaria japonica Areschoug spiked [As(III)], [As(V)], MMA, DMA, AsB, AsC. The outlet of the IC column was directly connected to the nebulizer of ICP-MS for the determination of arsenic. The speciation of arsenic has been carried out in several seaweed samples. A microwave-assisted extraction method was used for the extraction of arsenic species from seaweed samples. With a mixture of mobile phase A and methanol as extractant, the extraction efficiency was >73%, and the recoveries from spiked samples were in the range of 93â109%. The unknown compounds detected in different seaweeds were identified by coupling IC directly with electrospray ionizationâmass spectrometry (ESI-MS). Four arsenosugars and tetramethylarsonium ion (TMA) were identified in different seaweeds. A fat- soluble arsenolipid compound was identified in the extract of certified reference material BCR-279 Ulva lactuca when 1% HNO3 was used as the extractant. Second study, A HPLC separation procedure has been developed for the specia- tion of Cr(III), Cr(VI) in wine and diabetic supplement drinks samples. The species were separated on a reversed phase column (C8) in gradient elution mode. The mobile phase consisting of EDTA and TBAP in methanol at pH 6.9, yielded well resolved chromatograms of all the species within 2 min. The analyses were carried out using dynamic reaction cell inductively coupled plasma-mass spectrometer (DRC-ICP-MS). The DRC conditions have also been optimized to obtained interference free measure- ments of 52Cr+ and 53Cr+, which were otherwise interfered by: 35Cl16O1H+, 35Cl17O+, 40Ar12C+ on 52Cr+; and 37Cl16O+, 40Ar13C+, 40Ar12C1H+ on 53Cr+. The detection limits of the procedure were 0.052 ng 52Cr ml-1 and 0.054 ng 53Cr ml-1. The accuracy of the method has been validated by comparing the sum of the concentrations obtained for individual species with total concentration of the elements in NRCC SLRS-4 River Water. The method has also been applied on several real samples, included environmental water, wine and supplement drinks, in which case the comparison total chromium concentration. Supplement drinks has been made with total concentrations determined after complete dissolution of the samples. The species were separated by HPLC-DRC-ICP-MS in appropriate dilute. Advisors/Committee Members: Shiuh-Jen Jiang (committee member), Yen-Ling Chen (chair), Shou-Mei Wu (chair).

Subjects/Keywords: Chromium; Arsenic; HPLC; ICP-MS

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

APA (6^th Edition):

Liu, Y. (2014). Determination of arsenic species in seaweeds and chromium species by HPLC-ICP-MS. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0622114-215059

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):

Liu, Yin-hsiao. “Determination of arsenic species in seaweeds and chromium species by HPLC-ICP-MS.” 2014. Thesis, NSYSU. Accessed August 18, 2019. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0622114-215059.

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

MLA Handbook (7^th Edition):

Liu, Yin-hsiao. “Determination of arsenic species in seaweeds and chromium species by HPLC-ICP-MS.” 2014. Web. 18 Aug 2019.

Vancouver:

Liu Y. Determination of arsenic species in seaweeds and chromium species by HPLC-ICP-MS. [Internet] [Thesis]. NSYSU; 2014. [cited 2019 Aug 18]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0622114-215059.

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

Council of Science Editors:

Liu Y. Determination of arsenic species in seaweeds and chromium species by HPLC-ICP-MS. [Thesis]. NSYSU; 2014. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0622114-215059

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

NSYSU

8. Wu, Min-Chuan. Determination of trace metal in milk and steel by DRC ICP-MS.

Degree: Master, Chemistry, 2003, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0711103-160536

none Advisors/Committee Members: none (chair), none (committee member), none (chair).

Subjects/Keywords: ICP-MS

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

APA (6^th Edition):

Wu, M. (2003). Determination of trace metal in milk and steel by DRC ICP-MS. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0711103-160536

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):

Wu, Min-Chuan. “Determination of trace metal in milk and steel by DRC ICP-MS.” 2003. Thesis, NSYSU. Accessed August 18, 2019. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0711103-160536.

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

MLA Handbook (7^th Edition):

Wu, Min-Chuan. “Determination of trace metal in milk and steel by DRC ICP-MS.” 2003. Web. 18 Aug 2019.

Vancouver:

Wu M. Determination of trace metal in milk and steel by DRC ICP-MS. [Internet] [Thesis]. NSYSU; 2003. [cited 2019 Aug 18]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0711103-160536.

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

Council of Science Editors:

Wu M. Determination of trace metal in milk and steel by DRC ICP-MS. [Thesis]. NSYSU; 2003. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0711103-160536

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

NSYSU

9. Tsai, Yu-Tuan. none.

Degree: Master, Chemistry, 2003, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0711103-161438

Subjects/Keywords: ICP-MS

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

APA (6^th Edition):

Tsai, Y. (2003). none. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0711103-161438

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):

Tsai, Yu-Tuan. “none.” 2003. Thesis, NSYSU. Accessed August 18, 2019. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0711103-161438.

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

MLA Handbook (7^th Edition):

Tsai, Yu-Tuan. “none.” 2003. Web. 18 Aug 2019.

Vancouver:

Tsai Y. none. [Internet] [Thesis]. NSYSU; 2003. [cited 2019 Aug 18]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0711103-161438.

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

Council of Science Editors:

Tsai Y. none. [Thesis]. NSYSU; 2003. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0711103-161438

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

NSYSU

10. Hsuan Yen, Ke. Determination of Inorganic arsenic compound in rice and seaweed by HPLC-DRC-CVG-ICP-MS.

Degree: Master, Chemistry, 2016, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0627116-141935

► In the first study, we assess the inorganic arsenic species content in seaweed and rice. The determination of arsenic species have bee used ion exchange… (more)

Subjects/Keywords: HPLC; ICP-MS; CVG; DRC

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

APA (6^th Edition):

Hsuan Yen, K. (2016). Determination of Inorganic arsenic compound in rice and seaweed by HPLC-DRC-CVG-ICP-MS. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0627116-141935

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):

Hsuan Yen, Ke. “Determination of Inorganic arsenic compound in rice and seaweed by HPLC-DRC-CVG-ICP-MS.” 2016. Thesis, NSYSU. Accessed August 18, 2019. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0627116-141935.

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

MLA Handbook (7^th Edition):

Hsuan Yen, Ke. “Determination of Inorganic arsenic compound in rice and seaweed by HPLC-DRC-CVG-ICP-MS.” 2016. Web. 18 Aug 2019.

Vancouver:

Hsuan Yen K. Determination of Inorganic arsenic compound in rice and seaweed by HPLC-DRC-CVG-ICP-MS. [Internet] [Thesis]. NSYSU; 2016. [cited 2019 Aug 18]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0627116-141935.

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

Council of Science Editors:

Hsuan Yen K. Determination of Inorganic arsenic compound in rice and seaweed by HPLC-DRC-CVG-ICP-MS. [Thesis]. NSYSU; 2016. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0627116-141935

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

11. Oliveira, Luciano Henrique Barca de [UNESP]. Avaliação dos teores de arsênio em tecidos de tilápias (Oreochromis niloticus) e estudo da bioacumulação de As (III).

Degree: 2017, Universidade Estadual Paulista

URL: http://hdl.handle.net/11449/150337

►

O mercado de pescados no Brasil tem se expandido muito nos últimos anos e com previsão de um crescimento ainda maior. A busca crescente por… (more)

▼

O mercado de pescados no Brasil tem se expandido muito nos últimos anos e com previsão de um crescimento ainda maior. A busca crescente por essa fonte de alimento no país leva à uma preocupação associada a qualidade do pescado, principalmente se tratando de metais tóxicos presentes nas águas e sedimentos dos rios. Os peixes, assim como outros frutos do mar, têm a capacidade de bioacumular estes metais em seu organismo, seja por contato direto ou indireto. O arsênio é um destes contaminantes e está presente naturalmente em águas e sedimentos, e também advindo de atividades antropogênicas como queima de combustíveis fósseis e agrotóxicos. A concentração de arsênio total nos principais tecidos da tilápia foram determinados e uma estimativa dos riscos associados ao consumo deste peixe na região Noroeste de São Paulo foi realizada, levando em conta as diretrizes estabelecidas pela FAO/OMS. As análises foram realizadas por espectrometria de massa com plasma indutivamente acoplado (ICP-MS) no modo de discriminação de energia cinética (KED). Materiais de referência certificados foram analisados com recuperações de 101, 110 e 80% de NIST 1640a, NIST 1566b e DORM-3, respectivamente. Na parte consumível (o tecido muscular dos peixes), a concentração média encontrada foi de 0,030 ± 0,008 μg g-1, que é inferior ao valor máximo permitido de arsênio estabelecido pelas agências reguladoras nacionais e internacionais. A concentração média encontrada nas vísceras (estômago, brânquias e fígado) esteve na faixa de 0,016 – 1,170 μg g-1, demonstrando maior capacidade de bioacumulação de arsênio. Foram realizados esnsaios de bioacumulação com As(III) (espécie mais tóxica do arsênio) com tilápias em laboratório. O ensaio foi dividido em grupo de 7 dias de exposição e 7 dias de depuração ao contaminante. Os resultados demonstraram que o estômago e fígado desempenham um papel importante na absorção e acúmulo desse semimetal presente em águas contaminadas. A estimativa dos parâmetros tóxicocinéticos (constantes de absorção, depuração e fator de bioconcentração – BCF) obtidas com os testes de exposição ao As(III), permitiu avaliar a capacidade de absorção e depuração de cada órgão de interesse. A ordem de bioacumulação determinada pelo BCF foi: estômago > fígado > brânquias > filet.

Seafood market in Brazil has expanded greatly in recent years and is expected to grow even more. The search for this food source in the country leads to a concern associated with the quality of the fish, mainly by the treatment of toxic metals in the waters and sediments of the rivers. Fish, like other seafood, have the ability to bioaccumulate these metals in your body by direct or indirect contact. Arsenic is one of these contaminants and is naturally present in waters and sediments, as well as from anthropogenic activities such as the burning of fossil fuels and agrochemicals. The concentration of total arsenic in the main tissues of tilapia were evaluated and an estimation of the risks associated with the consumption of this fish was done, taking into…

Advisors/Committee Members: Gonzalez, Mario Henrique [UNESP], Nogueira, Ana Rita de Araujo, Universidade Estadual Paulista (UNESP).

Subjects/Keywords: Bioacumulação; Arsênio; ICP-MS; Pescados

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

APA (6^th Edition):

Oliveira, L. H. B. d. [. (2017). Avaliação dos teores de arsênio em tecidos de tilápias (Oreochromis niloticus) e estudo da bioacumulação de As (III). (Thesis). Universidade Estadual Paulista. Retrieved from http://hdl.handle.net/11449/150337

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):

Oliveira, Luciano Henrique Barca de [UNESP]. “Avaliação dos teores de arsênio em tecidos de tilápias (Oreochromis niloticus) e estudo da bioacumulação de As (III).” 2017. Thesis, Universidade Estadual Paulista. Accessed August 18, 2019. http://hdl.handle.net/11449/150337.

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

MLA Handbook (7^th Edition):

Oliveira, Luciano Henrique Barca de [UNESP]. “Avaliação dos teores de arsênio em tecidos de tilápias (Oreochromis niloticus) e estudo da bioacumulação de As (III).” 2017. Web. 18 Aug 2019.

Vancouver:

Oliveira LHBd[. Avaliação dos teores de arsênio em tecidos de tilápias (Oreochromis niloticus) e estudo da bioacumulação de As (III). [Internet] [Thesis]. Universidade Estadual Paulista; 2017. [cited 2019 Aug 18]. Available from: http://hdl.handle.net/11449/150337.

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

Council of Science Editors:

Oliveira LHBd[. Avaliação dos teores de arsênio em tecidos de tilápias (Oreochromis niloticus) e estudo da bioacumulação de As (III). [Thesis]. Universidade Estadual Paulista; 2017. Available from: http://hdl.handle.net/11449/150337

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

Universidade Estadual de Campinas

12. Milani, Raquel Fernanda, 1987-. Elementos inorgânicos em chás : espécies de arsênio, teor total e avaliação da extração de elementos traço no preparo da bebida .

Degree: 2015, Universidade Estadual de Campinas

URL: http://repositorio.unicamp.br/jspui/handle/REPOSIP/249398

► Resumo: Este trabalho teve por objetivo principal avaliar a extração de Al, As, Ba, Cd, Cu, Cr, Fe, Mn, Ni, Pb, Se e Zn no… (more)

▼ Resumo: Este trabalho teve por objetivo principal avaliar a extração de Al, As, Ba, Cd, Cu, Cr, Fe, Mn, Ni, Pb, Se e Zn no preparo de chá a partir de amostras comercializadas no país. Desta forma, foram avaliados os teores destes elementos nas amostras comerciais (ervas ou sachês) e nas infusões preparadas a partir destas amostras, utilizando a técnica de espectrometria de massas com plasma com acoplamento indutivo (ICP-MS). A avaliação das espécies de arsênio presentes nas bebidas foi realizada através da técnica de ICPMS hifenada à cromatografia líquida (HPLC-ICP-MS). Para o desenvolvimento de cada uma das etapas foram avaliadas as melhores condições instrumentais de análise, os métodos de preparo de amostras e as figuras de mérito (sensibilidade, através dos limites de detecção e de quantificação, exatidão e precisão), as quais foram aplicadas a noventa amostras das dez variedades de chá mais consumidas no país. O método de digestão ácida assistida por micro-ondas foi adequado à análise nas ervas, apresentando concordância entre 77-118% com os valores de dois materiais de referência certificados. As amostras de chá apresentaram grande variação nos teores destes elementos, sendo que algumas delas apresentaram teores acima do permitido pela legislação do país e do MERCOSUL para As, Cd e Pb. A análise multivariada foi também aplicada a estas amostras. Embora as amostras fossem constituídas por misturas de ervas, provenientes de diferentes localidades, as dez variedades foram satisfatoriamente classificadas em três grupos distintos: amostras de Camellia sinensis, amostras de chá mate e demais variedades, usando apenas sua composição inorgânica. Para as infusões, comprovou-se a extração máxima destes elementos no período de até 5 minutos de contato entre as ervas e a água fervente. O método direto foi considerado adequado, sendo obtida concordância entre 82-120% em ensaios de recuperação em três níveis de concentração. Em relação à adequação à legislação nacional, nenhuma amostra apresentou níveis acima do permitido para nenhum dos elementos determinados. As espécies de arsênio avaliadas (As (III), As (V) e ácidos monometil-arsônico e dimetil-arsínico) permitiram verificar a predominância das espécies inorgânicas nas infusões. O método proposto apresentou seletividade, ausência de interconversão entre as espécies, concordância com os valores encontrados para o teor de As total (87-127%) e limites de quantificação inferiores aos reportados na literatura. A avaliação da estimativa de ingestão diária de uma xícara de chá demonstrou importante relevância para Mn: o consumo de apenas uma xícara de chá por dia pode contribuir com até 14% da ingestão recomendada pela ANVISA. A estimativa de exposição aos contaminantes inorgânicos mostrou a baixa contribuição para alcançar os valores estabelecidos pelo CODEX ALIMENTARIUS, exceto para o Al nas amostras de Camellia sinensis: valores de até 48% da ingestão semanal tolerável provisória (PTWI) foram observados para este elemento; Abstract: The main objective of this work was… Advisors/Committee Members: Cadore, Solange, 1956- (advisor), Neto, Jose Anchieta Gomes (committee member), Pasquini, Celio (committee member).

Subjects/Keywords: Chá; Elementos inorgânicos; ICP-MS

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

APA (6^th Edition):

Milani, Raquel Fernanda, 1. (2015). Elementos inorgânicos em chás : espécies de arsênio, teor total e avaliação da extração de elementos traço no preparo da bebida . (Thesis). Universidade Estadual de Campinas. Retrieved from http://repositorio.unicamp.br/jspui/handle/REPOSIP/249398

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):

Milani, Raquel Fernanda, 1987-. “Elementos inorgânicos em chás : espécies de arsênio, teor total e avaliação da extração de elementos traço no preparo da bebida .” 2015. Thesis, Universidade Estadual de Campinas. Accessed August 18, 2019. http://repositorio.unicamp.br/jspui/handle/REPOSIP/249398.

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

MLA Handbook (7^th Edition):

Milani, Raquel Fernanda, 1987-. “Elementos inorgânicos em chás : espécies de arsênio, teor total e avaliação da extração de elementos traço no preparo da bebida .” 2015. Web. 18 Aug 2019.

Vancouver:

Milani, Raquel Fernanda 1. Elementos inorgânicos em chás : espécies de arsênio, teor total e avaliação da extração de elementos traço no preparo da bebida . [Internet] [Thesis]. Universidade Estadual de Campinas; 2015. [cited 2019 Aug 18]. Available from: http://repositorio.unicamp.br/jspui/handle/REPOSIP/249398.

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

Council of Science Editors:

Milani, Raquel Fernanda 1. Elementos inorgânicos em chás : espécies de arsênio, teor total e avaliação da extração de elementos traço no preparo da bebida . [Thesis]. Universidade Estadual de Campinas; 2015. Available from: http://repositorio.unicamp.br/jspui/handle/REPOSIP/249398

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

Universidade Estadual de Campinas

13. Magaldi, Thais Takayassu, 1991-. Avanços na determinação de elementos-traço utilizando ICP-MS e LA-ICP-MS .

Degree: 2017, Universidade Estadual de Campinas

URL: http://repositorio.unicamp.br/jspui/handle/REPOSIP/331260

► Resumo: A espectrometria de massas por plasma indutivamente acoplado (ICP-MS) atualmente é a técnica analítica mais empregada para determinar frações mássicas de elementos traço em… (more)

▼ Resumo: A espectrometria de massas por plasma indutivamente acoplado (ICP-MS) atualmente é a técnica analítica mais empregada para determinar frações mássicas de elementos traço em materiais geológicos. A introdução das amostras no plasma pode ser por nebulização de soluções ou pela ablação por laser de amostras sólidas (LA-ICP-MS). Esta dissertação aborda a determinação de elementos traços em rochas silicáticas com as duas formas de introdução das amostras no ICP-MS. A dissolução completa de amostras de materiais geológicos é um dos maiores desafios da utilização da técnica. Os métodos de dissolução em uso baseiam-se ou em demoradas digestões ácidas ou na fusão de amostras. Neste trabalho desenvolveu-se um método de digestão ácida totalmente realizado em forno de microondas com NH4HF2 + HNO3, e cujo procedimento completo é finalizado em até quatro horas. Para avaliar o método, se usou dezenove materiais de referência (MR) internacionais de rochas básicas a ácidas e se determinou quarenta e dois elementos traço. O método se mostrou eficaz na dissolução de todos MR usados com SiO2 < 65 g/100 g e de quatro dos seis MR avaliados cuja sílica supera este valor. Para aplicar o LA-ICP-MS com o mesmo propósito, a sub-amostra sólida deve ser homogênea e representar a rocha total. Vidros obtidos por fusão de rochas pulverizadas na ausência de fundentes num dispositivo de aquecimento em que a amostra é depositada sobre uma fita de Ir foram empregados para determinar trinta e sete elementos traço em vinte e dois MR. A calibração do LA-ICP-MS foi realizada com o MR NIST SRM 612, com normalização do sinal das massas em relação ao 44Ca. Os valores obtidos para MR de rochas básicas e intermediárias ficaram no intervalo aceitável (±20%) para elementos traço cuja temperatura de condensação supera 1000 °C, Os coeficientes de variação dos resultados obtidos com MR de rochas ácidas indicam que os vidros produzidos não tem composição homogênea, devido à presença de pequenas bolhas e, em alguns casos, à fusão incompleta de minerais refratários, como o zircão; Abstract: Inductively coupled plasma mass spectrometry (ICP-MS) is presently the most frequently used analytical technique in the determination of the mass fractions of trace elements in geological materials. The sample introduction into the plasma is either by nebulization of solutions or by the laser ablation of solid samples (LA-ICP-MS). This dissertation addresses the determination of trace elements in silicate rocks employing the two sample introduction options. The full dissolution of geological materials samples still is one of the most significant challenges in the application of the technique. The dissolution methods in use are based either on lengthy acid digestions or on sample fusion. In this work, an acid digestion method that uses NH4HF2 + HNO3 in a microwave oven and is accomplished in up to 4 hours was developed. For method evaluation, nineteen international reference materials (RM) from basic to acid rocks were used to determine the mass fractions of forty-two trace… Advisors/Committee Members: Enzweiler, Jacinta, 1955- (advisor), Andrade, Sandra (committee member), Meira, Vinicius Tieppo (committee member).

Subjects/Keywords: Elementos traços; ICP-MS; Dissolução

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

APA (6^th Edition):

Magaldi, Thais Takayassu, 1. (2017). Avanços na determinação de elementos-traço utilizando ICP-MS e LA-ICP-MS . (Thesis). Universidade Estadual de Campinas. Retrieved from http://repositorio.unicamp.br/jspui/handle/REPOSIP/331260

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):

Magaldi, Thais Takayassu, 1991-. “Avanços na determinação de elementos-traço utilizando ICP-MS e LA-ICP-MS .” 2017. Thesis, Universidade Estadual de Campinas. Accessed August 18, 2019. http://repositorio.unicamp.br/jspui/handle/REPOSIP/331260.

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

MLA Handbook (7^th Edition):

Magaldi, Thais Takayassu, 1991-. “Avanços na determinação de elementos-traço utilizando ICP-MS e LA-ICP-MS .” 2017. Web. 18 Aug 2019.

Vancouver:

Magaldi, Thais Takayassu 1. Avanços na determinação de elementos-traço utilizando ICP-MS e LA-ICP-MS . [Internet] [Thesis]. Universidade Estadual de Campinas; 2017. [cited 2019 Aug 18]. Available from: http://repositorio.unicamp.br/jspui/handle/REPOSIP/331260.

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

Council of Science Editors:

Magaldi, Thais Takayassu 1. Avanços na determinação de elementos-traço utilizando ICP-MS e LA-ICP-MS . [Thesis]. Universidade Estadual de Campinas; 2017. Available from: http://repositorio.unicamp.br/jspui/handle/REPOSIP/331260

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

University of Debrecen

14. Hanyi, Nóra. A magyar borok nehézfémtartalma .

Degree: DE – ATC – Mezőgazdaságtudományi Kar, 2010, University of Debrecen

URL: http://hdl.handle.net/2437/99662

► Szakdolgozatomban a magyar borok nehézfémtartalmát vizsgáltam,egy angol szerzőpáros 2008-as negatív hangvételű szakcikkére reagálva. 97 különböző borminta elemtartalmát vizsgáltam (43 elemet, melyet 6 elemre szűkítettem) ICP-OES,… (more)

Subjects/Keywords: bor; nehézfém; klaszteranalízis; ICP-MS

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

APA (6^th Edition):

Hanyi, N. (2010). A magyar borok nehézfémtartalma . (Thesis). University of Debrecen. Retrieved from http://hdl.handle.net/2437/99662

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):

Hanyi, Nóra. “A magyar borok nehézfémtartalma .” 2010. Thesis, University of Debrecen. Accessed August 18, 2019. http://hdl.handle.net/2437/99662.

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

MLA Handbook (7^th Edition):

Hanyi, Nóra. “A magyar borok nehézfémtartalma .” 2010. Web. 18 Aug 2019.

Vancouver:

Hanyi N. A magyar borok nehézfémtartalma . [Internet] [Thesis]. University of Debrecen; 2010. [cited 2019 Aug 18]. Available from: http://hdl.handle.net/2437/99662.

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

Council of Science Editors:

Hanyi N. A magyar borok nehézfémtartalma . [Thesis]. University of Debrecen; 2010. Available from: http://hdl.handle.net/2437/99662

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

15. Jouini, Ameur. Méthodes et techniques de détection, identification et quantification des ultra-traces, application aux émetteurs alpha (Am et Pu) : Speciation of Tritium and carbon 14 with organic molecules in nuclear plant discharges.

Degree: Docteur es, Chimie théorique, physique, analytique, 2017, Nantes

URL: http://www.theses.fr/2017NANT4063

►

La surveillance radiologique de l’environnement est un enjeu majeur pour étudier l Impact des activités industrielles et humaines mettant en œuvre des substances radioactives. Umalyse… (more)

▼

La surveillance radiologique de l’environnement est un enjeu majeur pour étudier l Impact des activités industrielles et humaines mettant en œuvre des substances radioactives. Umalyse de l:tImet Pu présents à l’échelle des ultra-traces dans les sols et les sédiments (- mBq.kg-1) est souvent menée par spectrométrie (après séparation chimique. Ces méthodes souffrent de plusieurs inconvénients. Les objectifs de cette thèse sont par conséquent de simplifier la méthode de séparation et d'obtenir une limite de détection basse et un temps d’analyse relativement court en utilisant lICPMS-HR couplé au système d’introduction Apex-Q/ACM. Sur la base des données de la littérature, une méthode chimique utilisant une seule résine d’extraction chromatographique (DGA) est proposée pour isoler les concentrations ultra-traces d’Am et de Pu des différents types d'éléments interférents. La méthodologie proposée a été évaluée avec des solutions synthétiques avant l'utilisation de solutions de lixiviation d’échantillons préalablement analysés par spectrométrie alpha. La méthode retenue demande plusieurs procédure d’élution pour pouvoir séparer les majeurs, les interférents isobariques, les lanthanides, l’uranium et le thorium. Des rendements de chimie supérieurs à 90% pour Am et 60% pour Pu ont pu être mesurés. La robustesse de la méthode d’analyse a été validée avec un standard de référence certifié (AIEA-38S) .Enfin, le protocole analytique d’isolation et de dosage des ultra-traces d241Am et de 239Pu par ICP-MS-HR solution a été appliqué à des échantillons de sédiments échantillonnés dans l’estuaire de la Loire pour caractériser L’état radiologique du fleuve.

Radiological monitoring of the environment is a key issue for studying the impact of industrial and human activities using radioactive substances. The analysis of Am and Pu present at ultra-trace concentrations in soils and sediments (-mBq.kg-l) is often carried out by spectrometry after chemical separation. This procedure suffers from several drawbacks (multi-step separation process and long coun.tingtime). The objectives of this PhD are consequently simplify separation process and to achieve a low limit of detection with a relatively short analysis time using a high-resolution plasma source mass spectrometer HR-ICP-MScoupled to the introduction system Apex-Q/ACM. Base on literature data, a chemical methodology using a single column extraction chromatography resin (DGA) is proposed for isolating ultra-trace concentrations of Am and Pu from different types of interfering elements. The proposed methodology is assessed with synthetic solutions prior to the use of real leaching solutions previously analyzed by alpha spectrometry. The chosen method requires several elution procedures in order to separate the majors element, isobaric interferes, lanthanides, uranium and thorium. Recovery yields greater than 90% for Am and 60% for Pu were determined. The robustness of the analytical method was validated with a certified reference standard sample (IAEA-385). Finally, the analytical…

Advisors/Committee Members: Montavon, Gilles (thesis director).

Subjects/Keywords: Résine DGA; ICP-MS-HR

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

APA (6^th Edition):

Jouini, A. (2017). Méthodes et techniques de détection, identification et quantification des ultra-traces, application aux émetteurs alpha (Am et Pu) : Speciation of Tritium and carbon 14 with organic molecules in nuclear plant discharges. (Doctoral Dissertation). Nantes. Retrieved from http://www.theses.fr/2017NANT4063

Chicago Manual of Style (16^th Edition):

Jouini, Ameur. “Méthodes et techniques de détection, identification et quantification des ultra-traces, application aux émetteurs alpha (Am et Pu) : Speciation of Tritium and carbon 14 with organic molecules in nuclear plant discharges.” 2017. Doctoral Dissertation, Nantes. Accessed August 18, 2019. http://www.theses.fr/2017NANT4063.

MLA Handbook (7^th Edition):

Jouini, Ameur. “Méthodes et techniques de détection, identification et quantification des ultra-traces, application aux émetteurs alpha (Am et Pu) : Speciation of Tritium and carbon 14 with organic molecules in nuclear plant discharges.” 2017. Web. 18 Aug 2019.

Vancouver:

Jouini A. Méthodes et techniques de détection, identification et quantification des ultra-traces, application aux émetteurs alpha (Am et Pu) : Speciation of Tritium and carbon 14 with organic molecules in nuclear plant discharges. [Internet] [Doctoral dissertation]. Nantes; 2017. [cited 2019 Aug 18]. Available from: http://www.theses.fr/2017NANT4063.

Council of Science Editors:

Jouini A. Méthodes et techniques de détection, identification et quantification des ultra-traces, application aux émetteurs alpha (Am et Pu) : Speciation of Tritium and carbon 14 with organic molecules in nuclear plant discharges. [Doctoral Dissertation]. Nantes; 2017. Available from: http://www.theses.fr/2017NANT4063

Universidade Estadual de Campinas

16. Mataveli, Lidiane Raquel Verola, 1983-. Metalômica comparativa de soja [Glycine max (L.) Merrill] transgênica e não-transgênica utilizando sistema multidimensional de separação .

Degree: 2013, Universidade Estadual de Campinas

URL: http://repositorio.unicamp.br/jspui/handle/REPOSIP/248607

► Resumo: Este trabalho consistiu em estudos de metalômica comparativa de sementes de soja transgênica (T) e não-transgênica (NT). Para tanto, as sementes de soja T… (more)

▼ Resumo: Este trabalho consistiu em estudos de metalômica comparativa de sementes de soja transgênica (T) e não-transgênica (NT). Para tanto, as sementes de soja T e NT foram comparadas, em um primeiro, momento levando-se em conta: concentração total dos elementos, comportamento dos elementos durante extração utilizando-se fracionamento sequencial, e bioacessibilidade dos elementos após procedimento de digestão gastrointestinal simulada (in vitro). As análises preliminares foram feitas utilizando-se ICP-MS com analisador de massas quadrupolar, e as análises posteriores utilizando espectrometria de massas de alta resolução com plasma acoplado indutivamente (HR-ICP-MS). Foram determinados 25 elementos em concentrações variando de ng g até %. Foi observado que as sementes de soja T e NT exibem diferenças estatisticamente significantes nas concentrações de Cu, Fe e Sr, sendo os dois primeiros apresentando maiores concentrações na semente T, e, o último, com maior concentração nas sementes de soja NT. Estes resultados também se refletiram nos conteúdos desses elementos em extratos aquosos e resíduos obtidos por meio de fracionamento sequencial. Ainda, os experimentos de bioacessibilidade realizados mostraram que as frações bioacessíveis de Cu, Fe, e outros elementos (Mn, S, Zn) contribuíram em maior porcentagem para a concentração total dos elementos nas sementes de soja T do que para as sementes de soja NT. Posteriormente, foi dada continuidade aos estudos utilizando cromatografia líquida bidimensional off line para as amostras de sementes de soja, sendo a primeira dimensão constituída de cromatografia de exclusão por tamanho (SEC,) e a segunda dimensão constituída de cromatografia de troca aniônica (AEX). Na primeira dimensão cromatográfica foram identificadas três frações contendo metais por meio da hifenação SEC-ICP-MS: a primeira correspondendo a massas molares entre 38,1 e 181,1 kDa, a segunda correspondendo a massas molares entre 8,2 e 17,2 kDa, e a terceira fração correspondendo a massas molares entre 0,4 e 3,8 kDa. As três frações identificadas foram separadas, liofilizadas, e separadas novamente utilizando a cromatografia de troca aniônica. Foram detectados metais em todas as frações separadas por SEC: três sub-frações da primeira fração, uma sub-fração na segunda fração e três sub-frações na terceira fração. Os eluatos foram coletados, liofilizados, digeridos e levados ao espectrômetro de massas com fonte de ionização por electrospray (ESI-MS) para identificação de proteínas. Foram identificadas 33 e, entre elas, duas proteinas previamente relacionadas a metais foram encontradas: seed lipoxygenase 1 e b-conglycinin. Após a separação na segunda dimensão cromatográfica, as sub-frações resultantes foram liofilizadas e submetidas a uma terceira dimensao de separacao, utilizando a eletroforese em gel de poliacrilamida unidimensional (SDS-PAGE). As bandas obtidas por SDS-PAGE foram recortadas e digeridas a fim de analisar os metais presentes nas mesmas, destacando os resultados obtidos para Fe, onde o mesmo foi… Advisors/Committee Members: Arruda, Marco Aurelio Zezzi, 1965- (advisor), Tasic, Ljubica, 1970- (advisor), Júnior, Fernando Barbosa (committee member), Padilha, Pedro de Magalhães (committee member), Cantú, Ana Valéria Colnaghi Simionato (committee member), Kubota, Lauro Tatsuo (committee member).

Subjects/Keywords: Soja; Metalômica; HPLC-ICP-MS

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

APA (6^th Edition):

Mataveli, Lidiane Raquel Verola, 1. (2013). Metalômica comparativa de soja [Glycine max (L.) Merrill] transgênica e não-transgênica utilizando sistema multidimensional de separação . (Thesis). Universidade Estadual de Campinas. Retrieved from http://repositorio.unicamp.br/jspui/handle/REPOSIP/248607

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):

Mataveli, Lidiane Raquel Verola, 1983-. “Metalômica comparativa de soja [Glycine max (L.) Merrill] transgênica e não-transgênica utilizando sistema multidimensional de separação .” 2013. Thesis, Universidade Estadual de Campinas. Accessed August 18, 2019. http://repositorio.unicamp.br/jspui/handle/REPOSIP/248607.

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

MLA Handbook (7^th Edition):

Mataveli, Lidiane Raquel Verola, 1983-. “Metalômica comparativa de soja [Glycine max (L.) Merrill] transgênica e não-transgênica utilizando sistema multidimensional de separação .” 2013. Web. 18 Aug 2019.

Vancouver:

Mataveli, Lidiane Raquel Verola 1. Metalômica comparativa de soja [Glycine max (L.) Merrill] transgênica e não-transgênica utilizando sistema multidimensional de separação . [Internet] [Thesis]. Universidade Estadual de Campinas; 2013. [cited 2019 Aug 18]. Available from: http://repositorio.unicamp.br/jspui/handle/REPOSIP/248607.

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

Council of Science Editors:

Mataveli, Lidiane Raquel Verola 1. Metalômica comparativa de soja [Glycine max (L.) Merrill] transgênica e não-transgênica utilizando sistema multidimensional de separação . [Thesis]. Universidade Estadual de Campinas; 2013. Available from: http://repositorio.unicamp.br/jspui/handle/REPOSIP/248607

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

University of North Texas

17. DeLeon, Vallerie H. Investigation of Novel Electrochemical Synthesis of Bioapatites and Use in Elemental Bone Analysis.

Degree: 2012, University of North Texas

URL: https://digital.library.unt.edu/ark:/67531/metadc177191/

► In this research, electrochemical methods are used to synthesize the inorganic fraction of bone, hydroxyapatite, for application in biological implants and as a calibration material… (more)

▼ In this research, electrochemical methods are used to synthesize the inorganic fraction of bone, hydroxyapatite, for application in biological implants and as a calibration material for elemental analysis in human bone. Optimal conditions of electrochemically deposited uniform apatite coatings on stainless steel were investigated. Apatite is a ceramic with many different phases and compositions that have beneficial characteristics for biomedical applications. Of those phases hydroxyapatite (HA) is the most biocompatible and is the primary constituent of the inorganic material in bones. HA coatings on metals and metal alloys have the ability to bridge the growth between human tissues and implant interface, where the metal provides the strength and HA provides the needed bioactivity. The calcium apatites were electrochemically deposited using a modified simulated body fluid adjusted to pH 4-10, for 1-3 hours at varying temperature of 25-65°C while maintaining cathodic potentials of -1.0 to -1.5V. It was observed that the composition and morphology of HA coatings change during deposition by the concentration of counter ions in solution, pH, temperature, applied potential, and post-sintering. The coatings were characterized by powder x-ray diffraction, Fourier transform infrared spectroscopy, and scanning electron microscopy. The precipitated powders from the experiment were also characterized, with results showing similarities to biological apatite. There is a need for quantitative elemental analysis of calcified biological matrices such as bone and teeth; however there are no suitable calibration materials commercially available for quantitative analysis. Matrix-matched standards are electrochemically synthesized for LA-ICP-MS analysis of human bone. The synthetic bioapatite is produced via a hydrothermal electrochemical process using a simulated body fluid solution to form hydroxyapatite. Additional bioapatite standards are synthesized containing trace amounts of metals. The x-ray diffraction of the synthesized standards shows an increase in cell volume for the crystal structure from 0.534 to 0.542 nm3 with the substitution of metals into the crystal structure. The analyte concentration and recoveries for the synthesized standards and reference materials were determined by ICP-MS with % RSD below 6.3% and limits of detection below 1.2 ng/mL for trace metals. The electrochemically synthesized bioapatite was also compared to standard reference materials with X-ray diffraction, FTIR, and Raman spectroscopy. Optimum laser ablation parameters were determined for the standards and human bone. The synthesized standards were homogeneous and the reproducibility for the isotope concentrations determined by LA-ICP-MS was between 3-10 % compared to 10-35% for SRM 1486 Bone Meal and SRM 1486 Bone Ash. A quantitative method has been developed for 2D mapping using LA-ICP-MS and the matrix-matched standards of metal-doped biopaptite to characterize metal concentrations in human bone. Laser ablation parameters for the… Advisors/Committee Members: Golden, Teresa D., Verbeck, Guido F., Petros, Rob A., D’Souza, Nandika.

Subjects/Keywords: Electrochemistry; bioapatite; LA-ICP-MS

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APA (6^th Edition):

DeLeon, V. H. (2012). Investigation of Novel Electrochemical Synthesis of Bioapatites and Use in Elemental Bone Analysis. (Thesis). University of North Texas. Retrieved from https://digital.library.unt.edu/ark:/67531/metadc177191/

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):

DeLeon, Vallerie H. “Investigation of Novel Electrochemical Synthesis of Bioapatites and Use in Elemental Bone Analysis.” 2012. Thesis, University of North Texas. Accessed August 18, 2019. https://digital.library.unt.edu/ark:/67531/metadc177191/.

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

MLA Handbook (7^th Edition):

DeLeon, Vallerie H. “Investigation of Novel Electrochemical Synthesis of Bioapatites and Use in Elemental Bone Analysis.” 2012. Web. 18 Aug 2019.

Vancouver:

DeLeon VH. Investigation of Novel Electrochemical Synthesis of Bioapatites and Use in Elemental Bone Analysis. [Internet] [Thesis]. University of North Texas; 2012. [cited 2019 Aug 18]. Available from: https://digital.library.unt.edu/ark:/67531/metadc177191/.

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

Council of Science Editors:

DeLeon VH. Investigation of Novel Electrochemical Synthesis of Bioapatites and Use in Elemental Bone Analysis. [Thesis]. University of North Texas; 2012. Available from: https://digital.library.unt.edu/ark:/67531/metadc177191/

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

University of Debrecen

18. Farkas, Gergő. ICP-MS mérések optimálása mikroanalitikai vizsgálatokhoz .

Degree: DE – Természettudományi és Technológiai Kar – Kémiai Intézet, 2014, University of Debrecen

URL: http://hdl.handle.net/2437/191906

Diplomamunkám célja az volt, hogy az ICP-MS mérések eredményeit pontosabbá tegyem, illetve alacsonyabb kimutatási határt érjek el, ezért egy multielemes mintával végeztem méréseket, mely során az üzemeltető szoftver segítségével módosítottam az ionizációs, mintabeviteli és egyéb mérési paramétereket. Advisors/Committee Members: Kovács, Béla (advisor).

Subjects/Keywords: ICP-MS mérések; mikroanalitika

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APA (6^th Edition):

Farkas, G. (2014). ICP-MS mérések optimálása mikroanalitikai vizsgálatokhoz . (Thesis). University of Debrecen. Retrieved from http://hdl.handle.net/2437/191906

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):

Farkas, Gergő. “ICP-MS mérések optimálása mikroanalitikai vizsgálatokhoz .” 2014. Thesis, University of Debrecen. Accessed August 18, 2019. http://hdl.handle.net/2437/191906.

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

MLA Handbook (7^th Edition):

Farkas, Gergő. “ICP-MS mérések optimálása mikroanalitikai vizsgálatokhoz .” 2014. Web. 18 Aug 2019.

Vancouver:

Farkas G. ICP-MS mérések optimálása mikroanalitikai vizsgálatokhoz . [Internet] [Thesis]. University of Debrecen; 2014. [cited 2019 Aug 18]. Available from: http://hdl.handle.net/2437/191906.

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

Council of Science Editors:

Farkas G. ICP-MS mérések optimálása mikroanalitikai vizsgálatokhoz . [Thesis]. University of Debrecen; 2014. Available from: http://hdl.handle.net/2437/191906

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

NSYSU

19. Liu, Heng-Yan. Identification and quantification of arsenic and selenium species in human urine and chromium and arsenic species in dietary supplement by HPLC-ICP-MS and HPLC-ESI-MS.

Degree: Master, Chemistry, 2013, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0630113-223124

► First research, speciation of arsenic and selenium in human urine was carried out using ion chromatography (IC) for separation and inductively coupled mass spectrometry (ICP-MS)… (more)

▼ First research, speciation of arsenic and selenium in human urine was carried out using ion chromatography (IC) for separation and inductively coupled mass spectrometry (ICP-MS) for detection. The arsenic and selenium species studied were arsenite [As(III)], arsenate [As(V)], monomethylarsonic acid (MMA), dimethylarsinic acid (DMA), arsenobetaine (AsB) and selenite [Se(IV)], selenate [Se(IV)]. Chromatographic separation of all the species was achieved in <11 min in gradient elution mode using (NH4)2CO3 and methanol at pH 8.8. The outlet of the IC column was directly connected to the nebulizer of ICP-MS for the determination of arsenic and selenium. The speciation of arsenic and selenium have been carried out in human urine samples. The recoveries from spiked samples were in the range of 91â109%. The unknown compounds detected in human urine were identified by coupling IC directly with electrospray ionizationâmass spectrometry (ESI-MS). Selenosugar was identified in human urine. The limits of detection were in the range of 0.008â0.015 ng mLâ1 for various arsenic species and 0.022-0.030 ng mLâ1 for various selenium species based on peak height. Second research, a HPLC separation procedure has been developed for the speciation of Cr(III), Cr(VI) and As(III), As(V), DMA, MMA, AsB in dietary supplement samples. The species were separated on anion-exchange LC in gradient elution mode. The mobile phase consisting of EDTA and (NH4)2CO3 at pH 8.8, operated in a linear ramp, yielded well resolved chromatograms of all the species within 14 min with retention times of less than 2% RSD. The analyses were carried out using dynamic reaction cellinductively coupled plasma-mass spectrometer (DRC-ICP-MS). The DRC conditions have also been optimized to obtained interference free measurements of 52Cr, 53Cr and 75As, which were otherwise interfered by: 35Cl16O1H, 40Ar12C on 52Cr; 37Cl16O, 40Ar13C, 40Ar12C1H on 53Cr; and 40Ar35Cl on 75As. The detection limits of the procedure were 0.008-0.019 ng As mL-1 and 0.084-0.087 ng Cr mL-1. The accuracy of the method has been validated by comparing the sum of the concentrations obtained for individual species with total concentration of the elements in NRCC SRM DORM-3 Fish Protein. The method has also been applied on three real samples, diabetic support formula tablets, diabetic support formula dietary fiber and Spirulina tablets , in which case the comparison has been made with total concentrations determined after complete dissolution of the samples. In this study, a microwave-assisted extraction method was used for the extraction of chromium and arsenic species from dietary supplemen samples. The extraction efficiency was better than 88% and the recoveries from spiked samples were in the range of 91â103%. Advisors/Committee Members: Wei-Lung Tseng (chair), Shiuh-jen Jiang (committee member), Shou-Mei Wu (chair).

Subjects/Keywords: ESI-MS; Arsenic; Selenium; Chromium; ICP-MS

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APA (6^th Edition):

Liu, H. (2013). Identification and quantification of arsenic and selenium species in human urine and chromium and arsenic species in dietary supplement by HPLC-ICP-MS and HPLC-ESI-MS. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0630113-223124

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):

Liu, Heng-Yan. “Identification and quantification of arsenic and selenium species in human urine and chromium and arsenic species in dietary supplement by HPLC-ICP-MS and HPLC-ESI-MS.” 2013. Thesis, NSYSU. Accessed August 18, 2019. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0630113-223124.

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

MLA Handbook (7^th Edition):

Liu, Heng-Yan. “Identification and quantification of arsenic and selenium species in human urine and chromium and arsenic species in dietary supplement by HPLC-ICP-MS and HPLC-ESI-MS.” 2013. Web. 18 Aug 2019.

Vancouver:

Liu H. Identification and quantification of arsenic and selenium species in human urine and chromium and arsenic species in dietary supplement by HPLC-ICP-MS and HPLC-ESI-MS. [Internet] [Thesis]. NSYSU; 2013. [cited 2019 Aug 18]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0630113-223124.

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

Council of Science Editors:

Liu H. Identification and quantification of arsenic and selenium species in human urine and chromium and arsenic species in dietary supplement by HPLC-ICP-MS and HPLC-ESI-MS. [Thesis]. NSYSU; 2013. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0630113-223124

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

NSYSU

20. Wu, Cheng-han. ä¸ãDetermination of trace element in fuels by using slurry sampling electrothermal vaporization inductively coupled plasma mass spectrometry äºãDetermination of dissolved silver(I) and silver nanoparticles based on single particle detection by inductively coupled plasma mass spectrometry.

Degree: Master, Chemistry, 2016, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0623116-000718

► The first research, the determination of S, As, Cd, Hg and Pb in fuels by USS-ETV-ICP-MS was described. Palladium and tartaric acid was used as… (more)

▼ The first research, the determination of S, As, Cd, Hg and Pb in fuels by USS-ETV-ICP-MS was described. Palladium and tartaric acid was used as the modifier to enhance the ion signals. In the experiment procedure, the operation conditions, sample concentration, DRC system conditions and spectral interference were studied. Vaporization temperature and ash temperature was set as 2100 °C and 380 °C. Oxygen was used in the dynamic reaction cell to convert 32S+ to 32S16O+, that can reduce the interference causing by 16O16O+. Finally, the method has been applied to determine S, As, Cd, Hg and Pb in SDF-3X, a sulfur standard solution in diesel fuel and three different kinds of fuels by using standard addition method and ARIDUS-DRC-ICP-MS method. After digestion, compare with the quantitative results obtained from the conventional pneumatic nebulizer to verify the feasibility. The method detection limit estimated from standard addition curves was 39, 0.07, 0.10, 0.07, 0.07 ng g-1 for S, As, Cd, Hg and Pb respectively. The second research, determination of dissolved silver(I) and silver nanoparticles based on single particle detection by ICP-MS was studied. ICP-MS is unique in its ability to provide information on nanoparticle size, size distribution, elemental composition, and number concentration in a single, rapid analysis. In the experiment procedure, the influences of number of readings were studied. In order to get enough pulse signals, 24000 readings were chosen. The study found that we should set the Minimum Noise Threshold to eliminate the instrument background noise. Through pneumatic nebulizers and acid digestion, we can validate the results. Finally, environmental water being added with silver nanoparticles was tested to obtain a similar size distribution and number concentration that demonstrates the feasibility of simultaneously detecting nanoparticles and metal ions. Advisors/Committee Members: Yen-Ling Chen (chair), Shiuh-jen Jiang (committee member), Yeou-Lih Huang (chair).

Subjects/Keywords: ETV-ICP-MS; SP-ICP-MS; multi-elemental analysis; silver nanoparticle

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APA (6^th Edition):

Wu, C. (2016). ä¸ãDetermination of trace element in fuels by using slurry sampling electrothermal vaporization inductively coupled plasma mass spectrometry äºãDetermination of dissolved silver(I) and silver nanoparticles based on single particle detection by inductively coupled plasma mass spectrometry. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0623116-000718

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):

Wu, Cheng-han. “ä¸ãDetermination of trace element in fuels by using slurry sampling electrothermal vaporization inductively coupled plasma mass spectrometry äºãDetermination of dissolved silver(I) and silver nanoparticles based on single particle detection by inductively coupled plasma mass spectrometry.” 2016. Thesis, NSYSU. Accessed August 18, 2019. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0623116-000718.

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

MLA Handbook (7^th Edition):

Wu, Cheng-han. “ä¸ãDetermination of trace element in fuels by using slurry sampling electrothermal vaporization inductively coupled plasma mass spectrometry äºãDetermination of dissolved silver(I) and silver nanoparticles based on single particle detection by inductively coupled plasma mass spectrometry.” 2016. Web. 18 Aug 2019.

Vancouver:

Wu C. ä¸ãDetermination of trace element in fuels by using slurry sampling electrothermal vaporization inductively coupled plasma mass spectrometry äºãDetermination of dissolved silver(I) and silver nanoparticles based on single particle detection by inductively coupled plasma mass spectrometry. [Internet] [Thesis]. NSYSU; 2016. [cited 2019 Aug 18]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0623116-000718.

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

Council of Science Editors:

Wu C. ä¸ãDetermination of trace element in fuels by using slurry sampling electrothermal vaporization inductively coupled plasma mass spectrometry äºãDetermination of dissolved silver(I) and silver nanoparticles based on single particle detection by inductively coupled plasma mass spectrometry. [Thesis]. NSYSU; 2016. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0623116-000718

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

Iowa State University

21. Witte, Travis. Laser ablation-inductively coupled plasma-mass spectrometry: Examinations of the origins of polyatomic ions and advances in the sampling of particulates.

Degree: 2011, Iowa State University

URL: https://lib.dr.iastate.edu/etd/10370

► Ongoing issues that affect the continued maturation of laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) are studied. Spectral interferences in the form of polyatomic ions can… (more)

Subjects/Keywords: ICP-MS; LA-ICP-MS; particulates; polyatomics; Chemistry

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APA (6^th Edition):

Witte, T. (2011). Laser ablation-inductively coupled plasma-mass spectrometry: Examinations of the origins of polyatomic ions and advances in the sampling of particulates. (Thesis). Iowa State University. Retrieved from https://lib.dr.iastate.edu/etd/10370

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):

Witte, Travis. “Laser ablation-inductively coupled plasma-mass spectrometry: Examinations of the origins of polyatomic ions and advances in the sampling of particulates.” 2011. Thesis, Iowa State University. Accessed August 18, 2019. https://lib.dr.iastate.edu/etd/10370.

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

MLA Handbook (7^th Edition):

Witte, Travis. “Laser ablation-inductively coupled plasma-mass spectrometry: Examinations of the origins of polyatomic ions and advances in the sampling of particulates.” 2011. Web. 18 Aug 2019.

Vancouver:

Witte T. Laser ablation-inductively coupled plasma-mass spectrometry: Examinations of the origins of polyatomic ions and advances in the sampling of particulates. [Internet] [Thesis]. Iowa State University; 2011. [cited 2019 Aug 18]. Available from: https://lib.dr.iastate.edu/etd/10370.

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

Council of Science Editors:

Witte T. Laser ablation-inductively coupled plasma-mass spectrometry: Examinations of the origins of polyatomic ions and advances in the sampling of particulates. [Thesis]. Iowa State University; 2011. Available from: https://lib.dr.iastate.edu/etd/10370

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

22. EIDER FERNANDO ALVES DOS SANTOS. [en] DEVELOPMENT OF A METHOD FOR MULTIELEMENTAL DETERMINATION IN BIODIESEL BY ICP-MS.

Degree: 2011, Pontifical Catholic University of Rio de Janeiro

URL: http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=18855

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[pt] Os elementos de maior interesse no biodiesel são os resíduos de catálise do processo produtivo (Na e K), os delimitados por legislação ambiental vigente… (more)

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[pt] Os elementos de maior interesse no biodiesel são os resíduos de catálise do processo produtivo (Na e K), os delimitados por legislação ambiental vigente (S, por exemplo) e os elementos venenosos aos catalisadores automotivos (Pb, V, P e Hg); porém, pesquisas orientadas no sentido de produzir metodologias analíticas para a realização de determinações em biodiesel vêm buscando um mapeamento elementar mais completo do combustível. Técnicas como ICP OES, ICP-MS com célula de reação/colisão, FAAS, GFAAS têm sido usualmente empregadas em determinações diretas ou não, mas ainda existem combinações de preparo de amostra e técnica analítica a ser pesquisadas. O presente trabalho teve como objetivo a avaliação de um sistema de decomposição ácida de amostra de biodiesel, visando à decomposição ácida da maior quantidade possível de matéria orgânica presente na matriz e a consequente determinação em ICP-MS. O processo de decomposição ácida, avaliado pela concentração de carbono residual, determinado em ICP OES, não requer grandes quantidades nem de energia térmica e nem do agente oxidante e ainda permite, após processo de redução da matriz nítrica remanescente, uma determinação direta em ICP-MS utilizando padrões aquosos na confecção das curvas e sem a necessidade de célula de colisão/reação. Foram determinados Ag, Ba, Cu, Mn, Mo, Ni, Ti e Zn em amostras de biodiesel de 4 matérias-primas diferentes e em duas amostras certificadas de biodiesel (NIST) e, tanto os resultados de recuperação, que variaram entre 90 e 110 por cento, quanto o comparativo realizado com as metodologias por ICP OES, validaram os resultados.

[en] Biodiesel appeared in this scenario as an alternative short-term, compatible with the current technologies and without the necessity of major modifications. The elements of greatest interest are the residue of catalyst of the production process (Na, K), those limited by environmental regulations (S) and those that act like poisons for the catalyst system of vehicles (Pb, V, P and Hg), but researches aimed to produce analytical methodologies for determinations in Biodiesel, have sought to achieve a multielement mapping of the fuel (Woods ET AL, 2007). Techniques like ICP OES, ICP-MS with reaction cell, FAAS, GFAAS have been usually used in direct or indirect determinations, but still there are combinations of sample preparation and analytical techniques to be studied. This present work sought to evaluate an analyzing system in ICP-MS after a digestion procedure looking for the minimal quantity of organic matter at the final sample. The preliminary results showed that the digestion process, evaluated by the concentration of residual carbon determined by ICP OES, it can be fast and does not require large amounts of energy and oxidizing agent. And still allow, after reducing the nitric matrix, the use of aqueous standards at the calibration curve. It was monitored Ag, Ba, Cu, Mn, Mo, Ni, Ti and Zn in 4 different sources of raw material for biodiesel, and the method was validated by the analysis of two NIST…

Advisors/Committee Members: TATIANA DILLENBURG SAINT PIERRE.

Subjects/Keywords: [pt] ICP OES; [en] ICP OES; [pt] ICP-MS; [en] ICP-MS; [pt] BIODIESEL; [en] BIODIESEL

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

APA (6^th Edition):

SANTOS, E. F. A. D. (2011). [en] DEVELOPMENT OF A METHOD FOR MULTIELEMENTAL DETERMINATION IN BIODIESEL BY ICP-MS. (Thesis). Pontifical Catholic University of Rio de Janeiro. Retrieved from http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=18855

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):

SANTOS, EIDER FERNANDO ALVES DOS. “[en] DEVELOPMENT OF A METHOD FOR MULTIELEMENTAL DETERMINATION IN BIODIESEL BY ICP-MS.” 2011. Thesis, Pontifical Catholic University of Rio de Janeiro. Accessed August 18, 2019. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=18855.

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

MLA Handbook (7^th Edition):

SANTOS, EIDER FERNANDO ALVES DOS. “[en] DEVELOPMENT OF A METHOD FOR MULTIELEMENTAL DETERMINATION IN BIODIESEL BY ICP-MS.” 2011. Web. 18 Aug 2019.

Vancouver:

SANTOS EFAD. [en] DEVELOPMENT OF A METHOD FOR MULTIELEMENTAL DETERMINATION IN BIODIESEL BY ICP-MS. [Internet] [Thesis]. Pontifical Catholic University of Rio de Janeiro; 2011. [cited 2019 Aug 18]. Available from: http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=18855.

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

Council of Science Editors:

SANTOS EFAD. [en] DEVELOPMENT OF A METHOD FOR MULTIELEMENTAL DETERMINATION IN BIODIESEL BY ICP-MS. [Thesis]. Pontifical Catholic University of Rio de Janeiro; 2011. Available from: http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=18855

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

23. Pérez, Anne. Bioalteration de verres basaltiques modèles : impact des sidérophores et rôle du fer : Bioalteration of basaltic model glasses : impact of siderophores and role of iron.

Degree: Docteur es, Chimie, 2015, Université Paris-Est

URL: http://www.theses.fr/2015PESC1153

►

Les processus d'altération des verres basaltiques constituant le pourtour vitrifié des laves en coussins influencent les grands cycles géochimiques terrestres puisqu'ils contribuent à l'évolution de… (more)

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Les processus d'altération des verres basaltiques constituant le pourtour vitrifié des laves en coussins influencent les grands cycles géochimiques terrestres puisqu'ils contribuent à l'évolution de la composition des océans et de la croûte océanique et sont des acteurs de la dynamique du climat. Au regard de la diversité des communautés bactériennes peuplant ces aquifères, il est admis que l'altération de ces roches est un processus biologiquement catalysé. Toutefois, peu d'études ont cherché à quantifier cette contribution bactérienne, au regard de la diversité et de la complexité des interactions possibles. Ce travail vise à expliciter et quantifier l'influence des ligands bactériens et notamment des sidérophores sur les processus d'altération, en décomposant les systèmes naturels en situations expérimentales simplifiées. Dans cette optique, trois verres basaltiques modèles, porteurs ou non de Fe(II)/Fe(III), ont été synthétisés. Des expériences de dissolution de ces verres, à pH neutre et à 25 C, ont été réalisées (1) en conditions abiotiques (solutions de sidérophores purs, milieu de culture stérile), (2) en présence de la souche Pseudomonas aeruginosa mais en confinant le verre dans des membranes de dialyse, (3) au contact direct de la souche. En parallèle de ces expériences, des analyses des solides ont été menées et un protocole d'analyse verticale de la composition d'un verre altéré par LA-ICP-MS a notamment été mis au point. L'analyse des solutions/milieux d'altération par ICP-OES a permis d'évaluer les cinétiques et la stoechiométrie de la dissolution. Les expériences en conditions abiotiques révèlent qu'en présence de sidérophores, l'extraction préférentielle du fer structural (respectivement de l'aluminium pour un verre sans fer) via des réactions de complexation en surface des verres, est le moteur de la dissolution du réseau vitreux. Réciproquement, dans les cultures bactériennes, la production de sidérophore par Pseudomonas aeruginosa est déclenchée lorsque (1) aucun contact direct verre/bactérie n'est possible, (2) le fer est absent de l'environnement cellulaire, (3) certains métaux toxiques ou pouvant nuire aux métabolismes bactériens (typiquement l'aluminium) sont néanmoins présents et (4) le fer n'est disponible que sous sa forme réduite. Outre l'accélération de l'hydrolyse du réseau vitreux en présence de sidérophores, l'influence positive de la constitution d'un biofilm en surface des verres sur la dissolution de ces derniers a également été observée. Ces résultats mettent en évidence la forte affinité de la souche pour les verres basaltiques ainsi que le rôle central du fer, oxydé ou réduit, dans les mécanismes dégagés

The alteration of ocean basalts partly controls the composition of seawater and of the oceanic crust which in turn influences the Earth's mantle geochemistry and may also have a significant impact on Earth's climate over a geological timescale. Regarding the existence of an extensive subsurface biosphere within the basaltic basement of the uppermost oceanic crust, the…

Advisors/Committee Members: Rossano, Stéphanie (thesis director).

Subjects/Keywords: Verre basaltique; Bio-Altération; Icp-Oes; Sidérophore; La-Icp-Ms; Basaltic glass; Bio alteration; Icp-Oes; Siderophore; La-Icp-Ms

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

APA (6^th Edition):

Pérez, A. (2015). Bioalteration de verres basaltiques modèles : impact des sidérophores et rôle du fer : Bioalteration of basaltic model glasses : impact of siderophores and role of iron. (Doctoral Dissertation). Université Paris-Est. Retrieved from http://www.theses.fr/2015PESC1153

Chicago Manual of Style (16^th Edition):

Pérez, Anne. “Bioalteration de verres basaltiques modèles : impact des sidérophores et rôle du fer : Bioalteration of basaltic model glasses : impact of siderophores and role of iron.” 2015. Doctoral Dissertation, Université Paris-Est. Accessed August 18, 2019. http://www.theses.fr/2015PESC1153.

MLA Handbook (7^th Edition):

Pérez, Anne. “Bioalteration de verres basaltiques modèles : impact des sidérophores et rôle du fer : Bioalteration of basaltic model glasses : impact of siderophores and role of iron.” 2015. Web. 18 Aug 2019.

Vancouver:

Pérez A. Bioalteration de verres basaltiques modèles : impact des sidérophores et rôle du fer : Bioalteration of basaltic model glasses : impact of siderophores and role of iron. [Internet] [Doctoral dissertation]. Université Paris-Est; 2015. [cited 2019 Aug 18]. Available from: http://www.theses.fr/2015PESC1153.

Council of Science Editors:

Pérez A. Bioalteration de verres basaltiques modèles : impact des sidérophores et rôle du fer : Bioalteration of basaltic model glasses : impact of siderophores and role of iron. [Doctoral Dissertation]. Université Paris-Est; 2015. Available from: http://www.theses.fr/2015PESC1153

Università Cattolica del Sacro Cuore

24. SPALLA, STEFANO. METODI CHIMICI PER IL RICONOSCIMENTO DELL'ORIGINE GEOGRAFICA DEGLI ALIMENTI.

Degree: 2008, Università Cattolica del Sacro Cuore

URL: http://hdl.handle.net/10280/249

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Il presente studio affronta il tema della rintracciabilità alimentare di prodotti agroalimentari, analizzando il caso del pomodoro da industria, cercando di trovare degli indicatori chimici… (more)

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Il presente studio affronta il tema della rintracciabilità alimentare di prodotti agroalimentari, analizzando il caso del pomodoro da industria, cercando di trovare degli indicatori chimici (markers) che siano in grado di discriminare prodotti provenienti da aree geografiche differenti. Viene quindi affrontato il tema della tipicità che consiste nel legame esistente tra l'alimento e il territorio nel quale viene prodotto. I parametri chimici che vengono indagati sono elementi appartenenti al gruppo delle terre rare (o serie dei lantanidi) e dei rapporti isotopici degli elementi pesanti quali lo Stronzio. La determinazione analitica delle terre rare nel pomodoro è stata effettuata con ICP-MS e HR-ICP-MS (Inductivity Coupled Plasma Mass Spectrometry, Hight Resolution Inductivity Coupled Plasma Mass Spectrometry). I rapporti isotopici dello Stronzio sono stati determinati con la tecnica TIMS (Thermal-Ionization Mass Spectroscopy) Le tecniche analitiche utilizzate hanno permesso di determinare con precisione e accuratezza tutti gli elementi appartenenti al gruppo delle terre rare nei comparti della pianta di pomodoro e nel terreno. La misura dei rapporti isotopici dello stronzio ha permesso di discriminare prodotti provenienti da aree geografiche differenti.

Food traceability systems have a broader scope and aim to document the history of a product along the entire production chain from primary raw materials to the final consumable product. the present work has looked at ways of detecting rare earth and strontium isotope abundance ratios. It is fundamental to have knowledge of the REE concentrations of the soil where the plants are grown and the distribution of the REEs in the different parts of the plants: roots, stems, leaves, and berries. Tomato is one of the most widely grown vegetables in the world. The analytical procedure, using inductively coupled mass spectrometry (ICP-MS) and HR-ICP-MS proved to be suitable for the determination of REEs in plants and soil, and was validated using certified samples. Strontium isotope ratio is an important parameter allowing the discrimination of foods coming from different geographical origins. Very high precision is usually reached with Thermal Ionization Mass Spectrometer (TIMS). The analytical techniques have permitted to determine all REEs elements in compartments of tomato plants. The described method point out the measurement of the 87Sr/86Sr ratio as a very important parameter for the discrimination of tomato from different geographical origins, even if the present experimental work treating a limited number of samples have to be considered as a “first step”.

Advisors/Committee Members: SILVA, SANDRO.

Subjects/Keywords: AGR/13: CHIMICA AGRARIA; tracciabilità degli alimenti, Icp-ms, icp-sfms, tims, pomodoro, food traceability, icp-ms, icp-sfms, tims, tomato

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

APA (6^th Edition):

SPALLA, S. (2008). METODI CHIMICI PER IL RICONOSCIMENTO DELL'ORIGINE GEOGRAFICA DEGLI ALIMENTI. (Doctoral Dissertation). Università Cattolica del Sacro Cuore. Retrieved from http://hdl.handle.net/10280/249

Chicago Manual of Style (16^th Edition):

SPALLA, STEFANO. “METODI CHIMICI PER IL RICONOSCIMENTO DELL'ORIGINE GEOGRAFICA DEGLI ALIMENTI.” 2008. Doctoral Dissertation, Università Cattolica del Sacro Cuore. Accessed August 18, 2019. http://hdl.handle.net/10280/249.

MLA Handbook (7^th Edition):

SPALLA, STEFANO. “METODI CHIMICI PER IL RICONOSCIMENTO DELL'ORIGINE GEOGRAFICA DEGLI ALIMENTI.” 2008. Web. 18 Aug 2019.

Vancouver:

SPALLA S. METODI CHIMICI PER IL RICONOSCIMENTO DELL'ORIGINE GEOGRAFICA DEGLI ALIMENTI. [Internet] [Doctoral dissertation]. Università Cattolica del Sacro Cuore; 2008. [cited 2019 Aug 18]. Available from: http://hdl.handle.net/10280/249.

Council of Science Editors:

SPALLA S. METODI CHIMICI PER IL RICONOSCIMENTO DELL'ORIGINE GEOGRAFICA DEGLI ALIMENTI. [Doctoral Dissertation]. Università Cattolica del Sacro Cuore; 2008. Available from: http://hdl.handle.net/10280/249

Duquesne University

25. Fahrenholz, Timothy. Application of Speciated Isotopes Dilution Mass Spectronmetry to the Assessment of Human Health and Toxic Exposure.

Degree: PhD, Chemistry and Biochemistry, 2011, Duquesne University

URL: https://dsc.duq.edu/etd/529

► Previous work by our research group demonstrated that quantitative chemical analysis of analytes, such as mercury and chromium species, in environmental matrices could be successfully… (more)

Subjects/Keywords: Autism; ICP-MS; Isotope dilution; LC/MS/MS; Mass spectrometry; Speciation

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

APA (6^th Edition):

Fahrenholz, T. (2011). Application of Speciated Isotopes Dilution Mass Spectronmetry to the Assessment of Human Health and Toxic Exposure. (Doctoral Dissertation). Duquesne University. Retrieved from https://dsc.duq.edu/etd/529

Chicago Manual of Style (16^th Edition):

Fahrenholz, Timothy. “Application of Speciated Isotopes Dilution Mass Spectronmetry to the Assessment of Human Health and Toxic Exposure.” 2011. Doctoral Dissertation, Duquesne University. Accessed August 18, 2019. https://dsc.duq.edu/etd/529.

MLA Handbook (7^th Edition):

Fahrenholz, Timothy. “Application of Speciated Isotopes Dilution Mass Spectronmetry to the Assessment of Human Health and Toxic Exposure.” 2011. Web. 18 Aug 2019.

Vancouver:

Fahrenholz T. Application of Speciated Isotopes Dilution Mass Spectronmetry to the Assessment of Human Health and Toxic Exposure. [Internet] [Doctoral dissertation]. Duquesne University; 2011. [cited 2019 Aug 18]. Available from: https://dsc.duq.edu/etd/529.

Council of Science Editors:

Fahrenholz T. Application of Speciated Isotopes Dilution Mass Spectronmetry to the Assessment of Human Health and Toxic Exposure. [Doctoral Dissertation]. Duquesne University; 2011. Available from: https://dsc.duq.edu/etd/529

26. Aguiar, Giovanna de Fatima Moreno. Determinação de elementos essenciais e tóxicos em sêmen bovino utilizando a espectrometria de massas com plasma acoplado (ICP-MS) com introdução direta da amostra.

Degree: Mestrado, Toxicologia, 2010, University of São Paulo

URL: http://www.teses.usp.br/teses/disponiveis/60/60134/tde-08092010-204549/ ;

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Os minerais são de extrema importância no metabolismo geral e no desempenho produtivo e reprodutivo dos bovinos. Atualmente, no Brasil, existem poucos estudos sobre o… (more)

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Os minerais são de extrema importância no metabolismo geral e no desempenho produtivo e reprodutivo dos bovinos. Atualmente, no Brasil, existem poucos estudos sobre o diagnóstico de deficiências minerais em bovinos, através de análise de macroelementos e elementos traço em fluidos biológicos. A maior parte das informações disponíveis limitam-se ao diagnóstico clínico de deficiências isoladas e à análise de elementos nas pastagens e no solo, que podem sugerir deficiências sub clínicas de alguns minerais, mas apresentam várias limitações e interferências. O objetivo deste trabalho foi desenvolver um método de análise simples, com introdução direta da amostra, utilizando a técnica de q-ICP-MS e DRC-ICP-MS, para determinação de Ca, Cu, Fe, Mg, Zn, I, Mo, As, Se, Ni, Co, Ba, Cs, Mn e Pb em sêmen bovino. Para realização das análises, foi utilizada calibração em meio aquoso e as amostras foram diluídas na proporção 1:50 em solução contendo 0,01% v/v Triton® X-100 e 0,5% v/v de ácido nítrico. Também foram avaliadas a calibração por ajuste de matriz e a análise das amostras após digestão por microondas, para confirmação dos resultados obtidos por introdução direta e calibração em meio aquoso. O DRC foi essencial para determinação de níquel. O gás de reação utilizado foi H2 e os parâmetros RPq e vazão do gás foram estudados para otimização do método. Os limites de detecção para determinação de 44Ca, 63Cu, 57Fe, 24Mg, 64Zn, 127I, 98Mo, 75As, 82Se, 59Co, 138Ba, 133Cs, 55Mn e 208Pb foram: 0,262; 0,003; 0,168; 0,004; 0,004; 0,026; 0,007; 0,007; 0,033; 0,002; 0,005; 0,002; 0,003; 0,002 µg L-1 respectivamente, e para determinação de 60Ni por DRC-ICP-MS o LD foi 0,020 µgL-1. O método desenvolvido foi aplicado para determinação de 15 elementos em amostras de sêmen de bovinos de diferentes raças usadas em programas de reprodução e inseminação artificial.

The minerals are of extreme importance in the general metabolism and in the productive and reproductive performance of the bovines. Nowadays, in Brazil, few studies exist on the diagnosis of mineral deficiencies in bovine, through macroelementos analysis and trace elements in biological fluids. Most of the available information is limited to the clinical diagnosis of isolated deficiencies and the analysis of elements in the pastures and in the soil, that can suggest sub clinical deficiencies of some minerals, but present several limitations and interferences. The objective of this work was to develop a method of simple analysis, with direct introduction of the sample, using the technique of q-ICP-MS and DRC-ICP-MS, for determination of Ca, Cu, Fe, Mg, Zn, I, Mo, As, Se, Ni, Co, Ba, Cs, Mn and Pb in bovine semen. Aqueous medium calibration was used in the analysis and the samples were diluted in the proportion 1:50 in solution containing 0,01% v/v Triton® X-100 and 0,5% v/v of nitric acid. They were also evaluated the matrix matching and the analysis of samples after digestion for microwave, for confirmation of the results obtained by direct introduction and calibration in aqueous…

Advisors/Committee Members: Barbosa Junior, Fernando.

Subjects/Keywords: bovines; bovinos; cela de reação dinâmica; dynamic reaction cell (DRC-ICP-MS); ICP-MS; ICP-MS; minerais; minerals; semen; sêmen

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

APA (6^th Edition):

Aguiar, G. d. F. M. (2010). Determinação de elementos essenciais e tóxicos em sêmen bovino utilizando a espectrometria de massas com plasma acoplado (ICP-MS) com introdução direta da amostra. (Masters Thesis). University of São Paulo. Retrieved from http://www.teses.usp.br/teses/disponiveis/60/60134/tde-08092010-204549/ ;

Chicago Manual of Style (16^th Edition):

Aguiar, Giovanna de Fatima Moreno. “Determinação de elementos essenciais e tóxicos em sêmen bovino utilizando a espectrometria de massas com plasma acoplado (ICP-MS) com introdução direta da amostra.” 2010. Masters Thesis, University of São Paulo. Accessed August 18, 2019. http://www.teses.usp.br/teses/disponiveis/60/60134/tde-08092010-204549/ ;.

MLA Handbook (7^th Edition):

Aguiar, Giovanna de Fatima Moreno. “Determinação de elementos essenciais e tóxicos em sêmen bovino utilizando a espectrometria de massas com plasma acoplado (ICP-MS) com introdução direta da amostra.” 2010. Web. 18 Aug 2019.

Vancouver:

Aguiar GdFM. Determinação de elementos essenciais e tóxicos em sêmen bovino utilizando a espectrometria de massas com plasma acoplado (ICP-MS) com introdução direta da amostra. [Internet] [Masters thesis]. University of São Paulo; 2010. [cited 2019 Aug 18]. Available from: http://www.teses.usp.br/teses/disponiveis/60/60134/tde-08092010-204549/ ;.

Council of Science Editors:

Aguiar GdFM. Determinação de elementos essenciais e tóxicos em sêmen bovino utilizando a espectrometria de massas com plasma acoplado (ICP-MS) com introdução direta da amostra. [Masters Thesis]. University of São Paulo; 2010. Available from: http://www.teses.usp.br/teses/disponiveis/60/60134/tde-08092010-204549/ ;

Universidade Federal de Santa Maria

27. Clarissa Marques Moreira. DETERMINAÇÃO DE ESPÉCIES DE ANTIMÔNIO EM ANTIMONIATO DE MEGLUMINA.

Degree: 2008, Universidade Federal de Santa Maria

URL: http://coralx.ufsm.br/tede/tde_busca/arquivo.php?codArquivo=2309

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In this study different methods for speciation of Sb(III) and Sb(V) in meglumine antimoniate (NMG) were evaluated. Liquid chromatography (LC) combined or not with hydride… (more)

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In this study different methods for speciation of Sb(III) and Sb(V) in meglumine antimoniate (NMG) were evaluated. Liquid chromatography (LC) combined or not with hydride generation (HG) was investigated for separation of Sb(III) and Sb(V). Inductively coupled plasma mass spectrometry (ICP-MS) was used as detector. A flow injection system together with hydride generation (FI-HG) coupled with atomic absorption spectrometry (AAS) was also employed for the selective determination of Sb(III) in presence of Sb(V). Two anion-exchange columns (Dionex, IonPacAS14 and Hamilton, PRP-X100) were evaluated for Sb(III) and Sb(V) separation by LC. Parameters related to the mobile phase, such as type (EDTA, potassium phthalate, and potassium phthalate + EDTA), concentration (0.5 to 10 mmol L-1), pH (3.5 to 7.0), flow rate (0.25 to 1.75 mL min-1) and elution mode (isocratic and gradient) were studied. The volume of sample injected into the chromatograph was set at 200 μL. For the chromatographic separation, the mobile phase which led to improved separations of Sb(III) and Sb(V) was the EDTA in concentrations of 0.5 mmol L-1 and 1.0 mmol L-1 for the IonPac and PRP-X100 columns, respectively. The most appropriate parameters related to the FI-HG system were also evaluated and set, such as reductant of Sb(III) (NaBH4 0.1%, m/v), complexant of Sb(V) (10% m/v citric acid,), water as the sample carrier, analytical path (300 cm), volume of sample (100 μL), total flow rate of solutions (8.5 mL min-1) and flow rate of carrier gas (0.4 mL min-1). In order to identify and/or quantify the species of Sb present in the NMG, the samples were diluted in water only. Through the use of LC-ICP-MS it was only possible to quantify the Sb(V), whereas the presence of Sb(III) was not detected. The determination of Sb(III) was only possible through FI-HG AAS, FI-HG-ICP-MS and LC-HG-ICP-MS (by combination of conditions set for LC and FI-HG individually). Similar results for Sb(III) were obtained through the techniques FI-HG AAS and HGICP- MS. Thus, it was possible to quantify free Sb(III) and Sb(V), while probable compounds of Sb(III) and/or Sb(V) bound to NMG were observed but could not be identified and quantified, mainly because of lack of reference solutions and difficulty in separating the observed Sb species. The precision of methods for determination of Sb(III) and Sb(V) (expressed as relative standard deviation for 5 consecutive measurements) was about 9% and 3% respectively. As there were no certified reference materials to evaluate the accuracy of the developed methods, recovery tests of Sb(III) and Sb(V) were made, where they were in the range 96 to 101% for Sb(V) and 85 to 104% for Sb(III). Moreover, the results were compared with those obtained by official methods to quantify Sb(III), Sb(V) and Sb total in meglumine antimoniate.

Neste trabalho foram avaliados diferentes métodos para a análise de especiação de Sb(III) e Sb(V) em antimoniato de meglumina (NMG). Cromatografia a líquido (LC) combinada, ou não, com a técnica de geração de…

Advisors/Committee Members: Valderi Luiz Dressler, Sergio Roberto Mortari, Juliano Smanioto Barin.

Subjects/Keywords: especiação; controle de qualidade de medicamentos; FI-HG-ICP-MS; LC-ICP-MS; antimoniato de meglumina; LC-HG-ICP-MS; QUIMICA

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

APA (6^th Edition):

Moreira, C. M. (2008). DETERMINAÇÃO DE ESPÉCIES DE ANTIMÔNIO EM ANTIMONIATO DE MEGLUMINA. (Thesis). Universidade Federal de Santa Maria. Retrieved from http://coralx.ufsm.br/tede/tde_busca/arquivo.php?codArquivo=2309

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):

Moreira, Clarissa Marques. “DETERMINAÇÃO DE ESPÉCIES DE ANTIMÔNIO EM ANTIMONIATO DE MEGLUMINA.” 2008. Thesis, Universidade Federal de Santa Maria. Accessed August 18, 2019. http://coralx.ufsm.br/tede/tde_busca/arquivo.php?codArquivo=2309.

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

MLA Handbook (7^th Edition):

Moreira, Clarissa Marques. “DETERMINAÇÃO DE ESPÉCIES DE ANTIMÔNIO EM ANTIMONIATO DE MEGLUMINA.” 2008. Web. 18 Aug 2019.

Vancouver:

Moreira CM. DETERMINAÇÃO DE ESPÉCIES DE ANTIMÔNIO EM ANTIMONIATO DE MEGLUMINA. [Internet] [Thesis]. Universidade Federal de Santa Maria; 2008. [cited 2019 Aug 18]. Available from: http://coralx.ufsm.br/tede/tde_busca/arquivo.php?codArquivo=2309.

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

Council of Science Editors:

Moreira CM. DETERMINAÇÃO DE ESPÉCIES DE ANTIMÔNIO EM ANTIMONIATO DE MEGLUMINA. [Thesis]. Universidade Federal de Santa Maria; 2008. Available from: http://coralx.ufsm.br/tede/tde_busca/arquivo.php?codArquivo=2309

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

NSYSU

28. Chen, Wei-ni. Determination of GeãAsãCdãSbãHgãBi and Pb in cosmetics using FIA-CVG-ICP-MS with slurry sample.

Degree: Master, Chemistry, 2014, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0622114-215925

► Abstract Chemical vapor generationï¼CVGï¼is a powerful sample introduction technique, which is used for inductively coupled plasma mass spectrometryï¼ICP-MSï¼to improve sensitivity and to eliminate matrix effect.… (more)

▼ Abstract Chemical vapor generationï¼CVGï¼is a powerful sample introduction technique, which is used for inductively coupled plasma mass spectrometryï¼ICP-MSï¼to improve sensitivity and to eliminate matrix effect. Analytes can be transformed to hydride or elemental vapor through chemical reaction. The gaseous analytes have higher transport efficiency than pneumatic nebulizer, therefore it has the better sensitivity and lower detection limit. CVG system can separate analytes from matrix by a gas-liquid separator, so it can avoid spectral and non-spectral interferences caused by matrix elements. First research is using slurry sampling as pretreatment, and to determine Ge, As, Cd, Sb, Hg and Bi in creams by FIA-CVG-ICP-MS. The cream slurry containing 2% m/v cream, 2% m/v Thiourea, 0.05% m/v L-cysteine, 0.5 Î¼g L-1 Co(II) and 1.2% v/v HCl. The quantifications have been carried out using standard addition and isotope dilution methods. The influences of vapor generation conditions on the analyte signals were reported. This method has been applied for the determination of Ge, As, Cd, Sb, Hg and Bi in cream samples obtained from the local markets. The analytical results of cream cosmetics certified reference materialï¼GBW09305ï¼determined by standard addition and isotope dilution methods were in a good agreement with ETV-ICP-MS and those of digested samples analysed by pneumatic nebulization ICP-MS. Under the optimum operating conditions, the detection limit obtained from the standard addition curve was in the range of 0.02-0.45 ng g-1 for Ge, As, Cd, Sb, Hg and Bi, respectively, in the cream samples. Second research is using slurry sampling as pretreatment, and to determine Pb in lipsticks by FIA-CVG-ICP-MS. The lipstick slurry containing 1% m/v cream, 0.5 m/v K3Fe(CN)6 and 0.5% v/v HNO3. The quantifications have been carried out using standard addition and isotope dilution methods. The influences of vapor generation conditions on the Pb signal were reported. This method has been applied for the determination of Pb in lipstick samples obtained from the local markets. The analytical results of cream cosmetics certified reference materialï¼GBW09305ï¼determined by standard addition and isotope dilution methods were in a good agreement with those of digested samples analysed by pneumatic nebulization ICP-MS. The method provided good reproducibility and the best detection limit was found to be 0.11 ng g-1 in the cream sample. Key word: CVG, ICP-MS, Isotope dilution, Creams, Lipsticks Advisors/Committee Members: Yen-Ling Chen (chair), Shou-Mei Wu (chair), Shiuh-jen Jiang (committee member).

Subjects/Keywords: Isotope dilution; ICP-MS; CVG; Lipsticks; Creams

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

APA (6^th Edition):

Chen, W. (2014). Determination of GeãAsãCdãSbãHgãBi and Pb in cosmetics using FIA-CVG-ICP-MS with slurry sample. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0622114-215925

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):

Chen, Wei-ni. “Determination of GeãAsãCdãSbãHgãBi and Pb in cosmetics using FIA-CVG-ICP-MS with slurry sample.” 2014. Thesis, NSYSU. Accessed August 18, 2019. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0622114-215925.

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

MLA Handbook (7^th Edition):

Chen, Wei-ni. “Determination of GeãAsãCdãSbãHgãBi and Pb in cosmetics using FIA-CVG-ICP-MS with slurry sample.” 2014. Web. 18 Aug 2019.

Vancouver:

Chen W. Determination of GeãAsãCdãSbãHgãBi and Pb in cosmetics using FIA-CVG-ICP-MS with slurry sample. [Internet] [Thesis]. NSYSU; 2014. [cited 2019 Aug 18]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0622114-215925.

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

Council of Science Editors:

Chen W. Determination of GeãAsãCdãSbãHgãBi and Pb in cosmetics using FIA-CVG-ICP-MS with slurry sample. [Thesis]. NSYSU; 2014. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0622114-215925

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

NSYSU

29. Xu, Zhuan-Zheng. Determination of Arsenic and It`s Species in Envirmental Water Samples by Inductively Coupled Plasms Mass Spectrometry with Dynamic Reaction Cell.

Degree: Master, Chemistry, 2002, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0702102-151019

none Advisors/Committee Members: none (chair), none (committee member), none (chair).

Subjects/Keywords: ICP-MS; DRC

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Xu, Z. (2002). Determination of Arsenic and It`s Species in Envirmental Water Samples by Inductively Coupled Plasms Mass Spectrometry with Dynamic Reaction Cell. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0702102-151019

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):

Xu, Zhuan-Zheng. “Determination of Arsenic and It`s Species in Envirmental Water Samples by Inductively Coupled Plasms Mass Spectrometry with Dynamic Reaction Cell.” 2002. Thesis, NSYSU. Accessed August 18, 2019. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0702102-151019.

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

MLA Handbook (7^th Edition):

Xu, Zhuan-Zheng. “Determination of Arsenic and It`s Species in Envirmental Water Samples by Inductively Coupled Plasms Mass Spectrometry with Dynamic Reaction Cell.” 2002. Web. 18 Aug 2019.

Vancouver:

Xu Z. Determination of Arsenic and It`s Species in Envirmental Water Samples by Inductively Coupled Plasms Mass Spectrometry with Dynamic Reaction Cell. [Internet] [Thesis]. NSYSU; 2002. [cited 2019 Aug 18]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0702102-151019.

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

Council of Science Editors:

Xu Z. Determination of Arsenic and It`s Species in Envirmental Water Samples by Inductively Coupled Plasms Mass Spectrometry with Dynamic Reaction Cell. [Thesis]. NSYSU; 2002. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0702102-151019

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

NSYSU

30. Liao, Pei-han. ä¸ãDetermination of Cd, Sb and Hg in Water Samples by CVG-ICP-MS after Cloud Point Extraction äºãDetermination of trace elements in Wine Samples by Chemical Vapor generation ICP-MS and Membrane Desolvation ICP-MS.

Degree: Master, Chemistry, 2011, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0826111-104605

none Advisors/Committee Members: Chao-ming Chiang (chair), Shiuh-jen Jiang (committee member), Wei-lung Tseng (chair).

Subjects/Keywords: ICP-MS; CPE

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Liao, P. (2011). ä¸ãDetermination of Cd, Sb and Hg in Water Samples by CVG-ICP-MS after Cloud Point Extraction äºãDetermination of trace elements in Wine Samples by Chemical Vapor generation ICP-MS and Membrane Desolvation ICP-MS. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0826111-104605

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):

Liao, Pei-han. “ä¸ãDetermination of Cd, Sb and Hg in Water Samples by CVG-ICP-MS after Cloud Point Extraction äºãDetermination of trace elements in Wine Samples by Chemical Vapor generation ICP-MS and Membrane Desolvation ICP-MS.” 2011. Thesis, NSYSU. Accessed August 18, 2019. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0826111-104605.

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

MLA Handbook (7^th Edition):

Liao, Pei-han. “ä¸ãDetermination of Cd, Sb and Hg in Water Samples by CVG-ICP-MS after Cloud Point Extraction äºãDetermination of trace elements in Wine Samples by Chemical Vapor generation ICP-MS and Membrane Desolvation ICP-MS.” 2011. Web. 18 Aug 2019.

Vancouver:

Liao P. ä¸ãDetermination of Cd, Sb and Hg in Water Samples by CVG-ICP-MS after Cloud Point Extraction äºãDetermination of trace elements in Wine Samples by Chemical Vapor generation ICP-MS and Membrane Desolvation ICP-MS. [Internet] [Thesis]. NSYSU; 2011. [cited 2019 Aug 18]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0826111-104605.

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

Council of Science Editors:

Liao P. ä¸ãDetermination of Cd, Sb and Hg in Water Samples by CVG-ICP-MS after Cloud Point Extraction äºãDetermination of trace elements in Wine Samples by Chemical Vapor generation ICP-MS and Membrane Desolvation ICP-MS. [Thesis]. NSYSU; 2011. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0826111-104605

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

Open Access Theses and Dissertations