| Conţinutul numărului revistei |
| Articolul precedent |
| Articolul urmator |
 696 0 |
 SM ISO690:2012GORBACHEV, Mikhail, GORINCHOY, Natalia, OSIPOV, Ivan. Accelerated decomposition of the fungicide, iprodione, on TiO2 surface under solar irradiation: experimental study and DFT mechanisms. In: Journal of Environmental Science and Health - Part B Pesticides, Food Contaminants, and Agricultural Wastes, 2020, nr. 9, pp. 1-13. ISSN 0360-1234. DOI: https://doi.org/10.1080/03601234.2020.1790965 |
| EXPORT metadate: Google Scholar Crossref CERIF DataCite Dublin Core |
 Journal of Environmental Science and Health - Part B Pesticides, Food Contaminants, and Agricultural Wastes |
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| Numărul 9 / 2020 / ISSN 0360-1234 /ISSNe 1532-4109 | ||||||
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| DOI:https://doi.org/10.1080/03601234.2020.1790965 | ||||||
| Pag. 1-13 | ||||||
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| Rezumat | ||||||
In the present work we have studied photo-induced decomposition of iprodione on silica support with different additions of titanium dioxide. Both the experimental and theoretical (DFT) approaches have been applied. It was found that 16 hours visible light exposure of the samples with 0.1% and 1.0% of TiO2 leads respectively to 48.28% and 21.05% of residual amounts of iprodione in these samples. A number of intermediates and end products were identified by means of GS-MS and LC-MS chromatography. The iprodione isomer (RP 30228) and its decay product 1-(3,5-dichlorophenyl)-5-isopropyl biuret (RP 36221) were identified among them. Our DFT calculations have revealed the detailed mechanisms of formation of the above products and the mechanism of accelerated proton-induced decomposition of iprodione molecules adsorbed on the TiO2 surface. Also, the intra-molecular reasons for iprodione stability in acidic media were clarified together with the mechanism of hydantoin cycle opening under the action of hydroxyl anions. © 2020, |
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| Cuvinte-cheie Oxide minerals, silica, titanium dioxide |
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