A Mechanistic Study of the Photodegradation of Herbicide 2,4,5-Trichlorophenoxyacetic Acid in Aqueous Solution | Sciact - CRIS-system of Boreskov Institute of Catalysis

A Mechanistic Study of the Photodegradation of Herbicide 2,4,5-Trichlorophenoxyacetic Acid in Aqueous Solution Full article

Journal

Photochemical & Photobiological Sciences
ISSN: 1474-905X , E-ISSN: 1474-9092

Output data

Year: 2013, Volume: 12, Number: 4, Pages: 684-689 Pages count : 6 DOI: 10.1039/C2PP25204J

Tags

PULSE-RADIOLYSIS; CYCLODEXTRINS; DEGRADATION; PESTICIDES; PHOTOLYSIS; RADICALS

Authors

Yurkova Maria P. ¹ , Pozdnyakov Ivan P. ¹ , Plyusnin Victor F. ¹ , Grivin Vycheslav P. ¹ , Bazhin Nikolay M. ¹ , Kruppa Alexandr I. ¹ , Maksimova Tatiana A. ¹

Affiliations

1	Institute of Chemical Kinetics and Combustion, 3 Institutskaya St., 630090 Novosibirsk, Russian Federation

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.

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

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

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

DB	Citing
Web of science	19
Scopus	21
OpenAlex	21