Metal ion promoted degradation mechanism of chlorpyrifos and phoxim
This study evaluate the degradation of the two organophosphorus pesticides: chlorpyrifos and phoxim in the presence of Ag+ at fixed initial concentration and temperature. Chlorpyrifos and phoxim were used as model compounds to develop experimental methods for the investigation of kinetic and degrada...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2016-01-01
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| Series: | Arabian Journal of Chemistry |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1878535212000949 |
| _version_ | 1811278435911204864 |
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| author | Masoumeh Sarkouhi Mojtaba Shamsipur Jalal Hassan |
| author_facet | Masoumeh Sarkouhi Mojtaba Shamsipur Jalal Hassan |
| author_sort | Masoumeh Sarkouhi |
| collection | DOAJ |
| description | This study evaluate the degradation of the two organophosphorus pesticides: chlorpyrifos and phoxim in the presence of Ag+ at fixed initial concentration and temperature. Chlorpyrifos and phoxim were used as model compounds to develop experimental methods for the investigation of kinetic and degradation pathways. In order to determine what metabolites will be formed after degradation we used 31P NMR. Chlorpyrifos and phoxim were found to degrade in the presence of Ag+ and the result shown in lower chlorpyrifos to Ag+ ratio (<8), only one product formed and its concentration increased versus time. Degradation of chlorpyrifos and phoxim in methanolic solution in the presence of Ag+ followed first-order exponential decay kinetics, and the half-life (t1/2) of chlorpyrifos and phoxim are 693 and 1155, respectively. |
| first_indexed | 2024-04-13T00:35:49Z |
| format | Article |
| id | doaj.art-7f9dd2f2e8ac45d995f58128e5ceaa4c |
| institution | Directory Open Access Journal |
| issn | 1878-5352 |
| language | English |
| last_indexed | 2024-04-13T00:35:49Z |
| publishDate | 2016-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Arabian Journal of Chemistry |
| spelling | doaj.art-7f9dd2f2e8ac45d995f58128e5ceaa4c2022-12-22T03:10:20ZengElsevierArabian Journal of Chemistry1878-53522016-01-0191434710.1016/j.arabjc.2012.04.026Metal ion promoted degradation mechanism of chlorpyrifos and phoximMasoumeh Sarkouhi0Mojtaba Shamsipur1Jalal Hassan2Department of Chemistry, Tarbiat Modares University, Tehran, IranDepartment of Chemistry, Razi University, Kermanshah, IranDepartment of Toxicology, Faculty of Veterinary Medicine, University of Tehran, Tehran, IranThis study evaluate the degradation of the two organophosphorus pesticides: chlorpyrifos and phoxim in the presence of Ag+ at fixed initial concentration and temperature. Chlorpyrifos and phoxim were used as model compounds to develop experimental methods for the investigation of kinetic and degradation pathways. In order to determine what metabolites will be formed after degradation we used 31P NMR. Chlorpyrifos and phoxim were found to degrade in the presence of Ag+ and the result shown in lower chlorpyrifos to Ag+ ratio (<8), only one product formed and its concentration increased versus time. Degradation of chlorpyrifos and phoxim in methanolic solution in the presence of Ag+ followed first-order exponential decay kinetics, and the half-life (t1/2) of chlorpyrifos and phoxim are 693 and 1155, respectively.http://www.sciencedirect.com/science/article/pii/S1878535212000949Kinetic31P NMROrganophosphorus pesticidesSilver ionsDegradation |
| spellingShingle | Masoumeh Sarkouhi Mojtaba Shamsipur Jalal Hassan Metal ion promoted degradation mechanism of chlorpyrifos and phoxim Arabian Journal of Chemistry Kinetic 31P NMR Organophosphorus pesticides Silver ions Degradation |
| title | Metal ion promoted degradation mechanism of chlorpyrifos and phoxim |
| title_full | Metal ion promoted degradation mechanism of chlorpyrifos and phoxim |
| title_fullStr | Metal ion promoted degradation mechanism of chlorpyrifos and phoxim |
| title_full_unstemmed | Metal ion promoted degradation mechanism of chlorpyrifos and phoxim |
| title_short | Metal ion promoted degradation mechanism of chlorpyrifos and phoxim |
| title_sort | metal ion promoted degradation mechanism of chlorpyrifos and phoxim |
| topic | Kinetic 31P NMR Organophosphorus pesticides Silver ions Degradation |
| url | http://www.sciencedirect.com/science/article/pii/S1878535212000949 |
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