Indirect photolysis of acetochlor: Rate constant of a nitrate-mediated hydroxyl radical reaction

被引：33

作者：

Brekken, JF ^{[1
]}

Brezonik, PL ^{[1
]}

机构：

[1] Univ Minnesota, Dept Civil Engn, Minneapolis, MN 55455 USA

来源：

CHEMOSPHERE | 1998年 / 36卷 / 12期

关键词：

D O I：

10.1016/S0045-6535(97)10223-5

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The second order rate constant, k(2), for reaction of the corn herbicide acetochlor with (OH)-O-. radicals was found to be 7.5 (+/-2.0) x 10(9) M-1 s(-1), in close agreement with the value reported for a similar herbicide, alachlor, based on structure-activity relationships-Summer-time half-lives of 1-20 days for acetochlor were estimated for the Blue Earth River (southern Minnesota), an agriculturally impacted river with high nitrate levels (the primary source of (OH)-O-. in surface waters). (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：2699 / 2704

页数：6

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