Clay and Soil Photolysis of the Pesticides Mesotrione and Metsulfuron Methyl
Photolysis may represent an important degradation process of pollutants at the surface of soil. In the present work, we report a detailed study on the degradation of two pesticides: mesotrione and metsulfuron methyl using a sunlight simulator. In a first step, we studied the photochemical behaviour...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | Applied and Environmental Soil Science |
| Online Access: | http://dx.doi.org/10.1155/2014/369037 |
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| author | Marie Siampiringue Pascal Wong Wah Chung Moursalou Koriko Gado Tchangbedji Mohamed Sarakha |
| author_facet | Marie Siampiringue Pascal Wong Wah Chung Moursalou Koriko Gado Tchangbedji Mohamed Sarakha |
| author_sort | Marie Siampiringue |
| collection | DOAJ |
| description | Photolysis may represent an important degradation process of pollutants at the surface of soil. In the present work, we report a detailed study on the degradation of two pesticides: mesotrione and metsulfuron methyl using a sunlight simulator. In a first step, we studied the photochemical behaviour at the surface of clays from the kinetic as well as from the analytical point of view. In both cases, the quantum yields were found to be higher when compared to those obtained in aqueous solutions. The effect of iron(III), water, and humic substances contents was studied. In the former cases, an increase of the degradation rate was observed while an inhibition was observed with the latter owing to a filter effect phenomenon. In a second step, we studied the photodegradation at the surface of natural soil and identified the generated byproducts. They appear to mainly arise from photohydrolysis process. |
| format | Article |
| id | doaj-art-2485e4c188ff4e2aad635c4382284dc3 |
| institution | Kabale University |
| issn | 1687-7667 1687-7675 |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Applied and Environmental Soil Science |
| spelling | doaj-art-2485e4c188ff4e2aad635c4382284dc32025-02-03T01:09:27ZengWileyApplied and Environmental Soil Science1687-76671687-76752014-01-01201410.1155/2014/369037369037Clay and Soil Photolysis of the Pesticides Mesotrione and Metsulfuron MethylMarie Siampiringue0Pascal Wong Wah Chung1Moursalou Koriko2Gado Tchangbedji3Mohamed Sarakha4Institut de Chimie de Clermont-Ferrand, Clermont Université and Université Blaise Pascal, Equipe Photochimie, BP 80026, 63171 Clermont Ferrand, FranceInstitut de Chimie de Clermont-Ferrand, Clermont Université and Université Blaise Pascal, Equipe Photochimie, BP 80026, 63171 Clermont Ferrand, FranceLaboratoire GTVD, Faculté des Sciences, Université de Lomé, 05 BP 796, Lomé, TogoLaboratoire GTVD, Faculté des Sciences, Université de Lomé, 05 BP 796, Lomé, TogoInstitut de Chimie de Clermont-Ferrand, Clermont Université and Université Blaise Pascal, Equipe Photochimie, BP 80026, 63171 Clermont Ferrand, FrancePhotolysis may represent an important degradation process of pollutants at the surface of soil. In the present work, we report a detailed study on the degradation of two pesticides: mesotrione and metsulfuron methyl using a sunlight simulator. In a first step, we studied the photochemical behaviour at the surface of clays from the kinetic as well as from the analytical point of view. In both cases, the quantum yields were found to be higher when compared to those obtained in aqueous solutions. The effect of iron(III), water, and humic substances contents was studied. In the former cases, an increase of the degradation rate was observed while an inhibition was observed with the latter owing to a filter effect phenomenon. In a second step, we studied the photodegradation at the surface of natural soil and identified the generated byproducts. They appear to mainly arise from photohydrolysis process.http://dx.doi.org/10.1155/2014/369037 |
| spellingShingle | Marie Siampiringue Pascal Wong Wah Chung Moursalou Koriko Gado Tchangbedji Mohamed Sarakha Clay and Soil Photolysis of the Pesticides Mesotrione and Metsulfuron Methyl Applied and Environmental Soil Science |
| title | Clay and Soil Photolysis of the Pesticides Mesotrione and Metsulfuron Methyl |
| title_full | Clay and Soil Photolysis of the Pesticides Mesotrione and Metsulfuron Methyl |
| title_fullStr | Clay and Soil Photolysis of the Pesticides Mesotrione and Metsulfuron Methyl |
| title_full_unstemmed | Clay and Soil Photolysis of the Pesticides Mesotrione and Metsulfuron Methyl |
| title_short | Clay and Soil Photolysis of the Pesticides Mesotrione and Metsulfuron Methyl |
| title_sort | clay and soil photolysis of the pesticides mesotrione and metsulfuron methyl |
| url | http://dx.doi.org/10.1155/2014/369037 |
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