Light-induced degradation of metsulfuron-methyl in water

被引：20

作者：

Caselli, M ^{[1
]}

机构：

[1] Univ Modena, Dipartimento Chim, I-41100 Modena, Italy

来源：

CHEMOSPHERE | 2005年 / 59卷 / 08期

关键词：

photodegradation; sulfonylureas; photolysis; quantum yield;

D O I：

10.1016/j.chemosphere.2004.11.076

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Photodegradation of metsulfuron-methyl, a sulfonylurea herbicide, has been investigated in aqueous solution at different pH and excitation wavelengths. The efficiency of the process has been evaluated through quantum yield determinations. The identification of the photoproducts indicates that the major photochemical pathway is initiated by C-S bond dissociation followed by involvement of water to yield the main final products; the behaviour in water is shown to differ markedly from that in an organic environment. (c) 2004 Elsevier Ltd. All rights reserved.

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页码：1137 / 1143

页数：7

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