| 論文名 |
A mechanistic study of the photodegradation of herbicide 2,4,5-trichlorophenoxyacetic acid in aqueous solution. |
| 著者 |
Maria P Yurkova
Ivan P Pozdnyakov
Victor F Plyusnin
Vycheslav P Grivin
Nikolay M Bazhin
Alexandr I Kruppa
Tatiana A Maksimova
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| キーワード |
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| 出版年月 |
1970年1月 |
| 発表先 |
Photochem Photobiol Sci. 2013 Apr;12(4):684-9. |
| WEBサイト |
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| 論文概要（和文） |
水溶液中の除草剤2,4,5-トリクロロフェノキシ酢酸の光分解の機構研究。 |
| 論文概要（英文） |
Photodegradation of herbicide 2,4,5-trichlorophenoxyacetic acid (2,4,5-T) in aqueous solution was investigated by stationary (254 nm) and nanosecond laser (266 nm) flash photolysis techniques. It was shown that in the primary photochemical step both photoionization (which generates a hydrated electron-radical cation pair) and heterolytic cleavage of a C-Cl bond takes place. The major products of substitution of one of the chlorine atoms in the 2-, 4- or 5-position by a hydroxyl group as well as the products of hydroxylation of the benzene ring in 3- and 6-positions were identified by HPLC and LC-MS methods. The complexation of 2,4,5-T with β- and γ-cyclodextrins (β(γ)CD) was investigated. The influence of such complexation on the quantum yield of herbicide photolysis and on the ratio of photodegradation products was determined. |
