Kinetics and mechanisms of radiation-induced degradation of acetochlor

Shao-Yang Liu; You-Peng Chen; Han-Qing Yu; Shu-Juan Zhang

doi:10.1016/j.chemosphere.2004.09.101

Kinetics and mechanisms of radiation-induced degradation of acetochlor

Chemosphere. 2005 Mar;59(1):13-9. doi: 10.1016/j.chemosphere.2004.09.101.

Authors

Shao-Yang Liu¹, You-Peng Chen, Han-Qing Yu, Shu-Juan Zhang

Affiliation

¹ Laboratory of Environmental Engineering, School of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China.

PMID: 15698639
DOI: 10.1016/j.chemosphere.2004.09.101

Abstract

The radiation-induced degradation of acetochlor was investigated in this work. In a mixed solvent composed of acetonitrile and water at a ratio of 20/80 in volume, the acetochlor degradation rate was proportional to the radiation dose rate and acetochlor concentration. The acetochlor degradation efficiency was higher under alkali conditions and lower under acidic conditions. The contribution to the acetochlor degradation by the radicals was in the order of: e(aq)->.OH>H.. The quantum efficiency ratios of .OH, e(aq)- and H. for the degradation of acetochlor were calculated as 1:3:1.

Publication types

Comparative Study
Research Support, Non-U.S. Gov't

MeSH terms

Chromatography, High Pressure Liquid
Cobalt Radioisotopes / chemistry*
Gamma Rays*
Herbicides / chemistry*
Herbicides / radiation effects
Hydrogen-Ion Concentration
Kinetics
Spectrophotometry, Ultraviolet
Toluidines / chemistry*
Toluidines / radiation effects

Substances

Cobalt Radioisotopes
Herbicides
Toluidines
acetochlor