Electrochemical Behavior of Methylparathion Under UV Irradiation
| Autor: | Manuel H. Barceló-Quintal, Eugenio O. Reyes-salas, José A. Manzanilla-Cano, Julio Flores-Rodríguez |
|---|---|
| Rok vydání: | 2001 |
| Předmět: |
Polarography
Atmospheric oxygen Aqueous medium Chemistry Health Toxicology and Mutagenesis Kinetics Inorganic chemistry Public Health Environmental and Occupational Health Soil Science Electrochemistry Pollution Analytical Chemistry Reaction rate Environmental Chemistry Degradation (geology) Irradiation Waste Management and Disposal Water Science and Technology |
| Zdroj: | International Journal of Environmental Analytical Chemistry. 80:115-127 |
| ISSN: | 1029-0397 0306-7319 |
| DOI: | 10.1080/03067310108044377 |
| Popis: | The electrochemical behavior of methylparathion under UV irradiation was monitored by polarography in an aqueous medium (pH 6.5) at 254 and 366 nm, and the effects of atmospheric oxygen and TiO2 on methylparathion were also looked at. Dissapearance of the methylparathion and appearance of two major electroactive degradation products were observed. The reaction rate constants for the process ranged from 3.55 × 10−5 to 5.69 × 10−5s−1, and the reaction showed pseudo-first-order kinetics. The methylparathion transformation did not depend on the experimental conditions. Spectroscopic and electrochemical data suggest the presence of p-nitrobenzoic acid as a common electroactive product. |
| Databáze: | OpenAIRE |
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