Journal
PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES
Volume 12, Issue 4, Pages 684-689Publisher
SPRINGERNATURE
DOI: 10.1039/c2pp25204j
Keywords
-
Funding
- Federal Target Program Scientific and scientific-pedagogical staff of innovative Russia [8175]
- Russian Foundation for Fundamental Research [11-03-00268, 12-03-00482, 12-03-91153-GFEN]
Ask authors/readers for more resources
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 beta- and gamma-cyclodextrins (beta(gamma)CD) was investigated. The influence of such complexation on the quantum yield of herbicide photolysis and on the ratio of photodegradation products was determined.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available