Kinetics and mechanisms of radiation-induced degradation of acetochlor

被引：31

作者：

Liu, SY ^{[1
]}

Chen, YP ^{[1
]}

Yu, HQ ^{[1
]}

Zhang, SJ ^{[1
]}

机构：

[1] Univ Sci & Technol China, Sch Chem, Lab Environm Engn, Hefei 230026, Anhui, Peoples R China

来源：

CHEMOSPHERE | 2005年 / 59卷 / 01期

关键词：

acetochlor; degradation; kinetics; mechanism; gamma-ray irradiation;

D O I：

10.1016/j.chemosphere.2004.09.101

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

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)-O-center dot > H-center dot. The quantum efficiency ratios of (OH)-O-center dot, e(aq)(-) and H-center dot for the degradation of acetochlor were calculated as 1:3:1. (c) 2004 Elsevier Ltd. All rights reserved.

引用

页码：13 / 19

页数：7

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