Abstract: 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.

Cite: Yurkova M.P. , Pozdnyakov I.P. , Plyusnin V.F. , Grivin V.P. , Bazhin N.M. , Kruppa A.I. , Maksimova T.A.
A Mechanistic Study of the Photodegradation of Herbicide 2,4,5-Trichlorophenoxyacetic Acid in Aqueous Solution
Photochemical & Photobiological Sciences. 2013. V.12. N4. P.684-689. DOI: 10.1039/C2PP25204J WOS Scopus РИНЦ ANCAN OpenAlex

Dates:

Submitted:	Jun 20, 2012
Accepted:	Oct 3, 2012
Published online:	Oct 4, 2012
Published print:	Apr 1, 2013

Identifiers:

Web of science:	WOS:000316572500015
Scopus:	2-s2.0-84875673900
Elibrary:	20429360
Chemical Abstracts:	2013:425463
Chemical Abstracts (print):	160:476581
OpenAlex:	W2023447462

Citing:

DB	Citing
Web of science	17
Scopus	20
OpenAlex	16

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