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1. Vera Espallardo, M. Teresa. Cinètiques i mecanismes de la degradació atmosfèrica d'alguns pesticides.

Degree: 2018, TDX

Pesticides are widely used today both in agriculture and in domestic or industry. Although bring significant benefits to society, both in matters related to health and the economy, their use implies a risk that must be met. Once a pesticide is applied, it will be distributed between the different environmental compartments -Bamboo, water and atmosfera- according to their physico-chemical properties and mode of application. The atmosphere is an important means of transport and reserve for pesticides and their degradation products. Upon reaching the atmosphere, the pesticide is distributed between the different phases watery, gaseous or particulate according to their physico-chemical properties and according to weather conditions. Although the main way of elimination of pesticides in the atmosphere is dry or wet deposition, according to the study compound, must take into account the possible interaction with other elements of pesticides that can be found there as are solar radiation, oxidizing agents such as ozone or hydroxyl radicals (OH), or other organic compounds emitted by human activities or the environment, etc ... that is, there may be a multitude of chemical reactions, most of these types which complicates radical reaction mechanisms and products formats. In order to study the reactions that may occur in the atmosphere, it is necessary to have a system which is capable of isolating the chemical processes of the weather while retaining the original composition of the air mass to be studied. In this sense, it is recommended to use simulation chambers size and, if possible, with natural light to simulate the processes that may occur in the atmosphere as closer to reality as possible. Among the photo-chemical simulation chambers available in the world, the installation EUPHORE is one of the most sophisticated. It has two twin houses approximately 200 m3 each protected with steel covers that allow work much in the dark as in daylight conditions when open. Moreover, the laboratories are located under simulation chambers are highly exploited. It has two optical instrumentation such as FTIR and gas chromatography-mass gases, liquids and liquid chromatography-mass monitors to measure NOx, CO, SO2, O3, instruments for particle characterization and like Teoma SMPS, PTRMS as mass spectrometers and instruments for measuring physical parameters such as solar radiation, pressure, temperature and relative humidity. This study has two main objectives proposed by some individual study atmospheric behavior of a group of five pesticides selected atmospheric simulation chambers and EUPHORE other hand, a study on the presence of pesticides in air from different areas of the Region of Valencia. First were studied pesticide chloropicrin, himexazol, chlorpyrifos-methyl, and lindane propaclor. NOTES reaction have been determined experimentally, for the most relevant atmospheric reactions such as photolysis (reaction to sunlight), the photo-oxidation (reaction with OH radicals in the presence of solar radiation) and the reaction ozone… Advisors/Committee Members: Muñoz Cintas, Amalia, Mellouki, Abdelwahid, Sidebottom, Howard, Departament de Química Física.

Subjects/Keywords: euphore; cloropicrina; himexazol; clorpirifos-metil; propaclor; lindà; plaguicides en aire; mesures de camp; simulació atmosfèrica; quimica atmosfèrica; temps de vida en l'atmosfera; fotodegradació; fotòlisis; reacció amb ozó en aire; degradació atmosfèrica

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APA (6th Edition):

Vera Espallardo, M. T. (2018). Cinètiques i mecanismes de la degradació atmosfèrica d'alguns pesticides. (Thesis). TDX. Retrieved from http://hdl.handle.net/10803/570710

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

Chicago Manual of Style (16th Edition):

Vera Espallardo, M Teresa. “Cinètiques i mecanismes de la degradació atmosfèrica d'alguns pesticides.” 2018. Thesis, TDX. Accessed October 16, 2019. http://hdl.handle.net/10803/570710.

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

MLA Handbook (7th Edition):

Vera Espallardo, M Teresa. “Cinètiques i mecanismes de la degradació atmosfèrica d'alguns pesticides.” 2018. Web. 16 Oct 2019.

Vancouver:

Vera Espallardo MT. Cinètiques i mecanismes de la degradació atmosfèrica d'alguns pesticides. [Internet] [Thesis]. TDX; 2018. [cited 2019 Oct 16]. Available from: http://hdl.handle.net/10803/570710.

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

Council of Science Editors:

Vera Espallardo MT. Cinètiques i mecanismes de la degradació atmosfèrica d'alguns pesticides. [Thesis]. TDX; 2018. Available from: http://hdl.handle.net/10803/570710

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

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