第 40 卷第 6 期 | | Vol. 40 No. 6 | 2010 年 12 月 | Dec 2010 |
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所属栏目:农药及中间体
高效氯氟氰菊酯在不同有机溶剂中的光化学降解研究 |
陈玲珑1,陈九星2*,陈力华2,付启明2,马 铭1,杨 辉3,张贵群4
(1. 湖南师范大学 化学化工学院,湖南 长沙 410081;2. 湖南化工研究院 国家农药创制工程技术研究中心,湖南 长沙 410007;3. 中南大学 化学化工学院,湖南 长沙 410083;4. 广西大学 农学院,广西 南宁 53000) |
摘 要:研究了以氙灯为光源,高效氯氟氰菊酯在不同有机溶剂中的光化学降解情况。结果表明:高效氯氟氰菊酯在正己烷、甲醇、乙腈、丙酮4种有机溶剂中,当浓度为10 mg/L时,光解半衰期分别为2.95、3.88、5.27、50.6 h;当浓度为20 mg/L时,光解半衰期分别为2.77、4.32、4.67、36.9 h。有机溶剂中光解速率顺序是:正己烷﹥甲醇﹥乙腈﹥丙酮。 |
关键词:高效氯氟氰菊酯;有机溶剂;光化学降解 |
中图分类号:TQ453.2+92 文献标识码:A 文章编号:1009-9212(2010)06-0016-04 |
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Photodegradation of Lambda-cyhalothrin in Various Solvents |
CHEN Ling-long1,CHEN Jiu-xing2*,CHEN Li-hua2,FU Qi-ming2,MA Ming1,YANG Hui3,ZHANG Gui-qun4
(1. College of Chemistry and Chemical Engineering,Hunan Normal University,Changsha 410081,China;2. Hunan Research Institute of Chemical Industry,National Engineering Research Center for Agrochemicals,Changsha 410007,China;3. College of Chemistry and Chemical Engineering,Central South University,Changsha 410083,China;4. College of Agriculture,Guangxi University,Nanning 530000,China) |
Abstract:The photodegradation of lambda-cyhalothrin in various solvents under xenon lamp was studied. At a concentration of 10 mg/L,the half-lives of lambda-cyhalothrin in hexane,methanol,acetonitrile and acetone were 2.95,3.88,5.27 and 50.6 hours,respectively. At a concentration of 20 mg/L,the half-lives of lambda-cyhalothrin in hexane,methanol,acetonitrile and acetone were 2.77,4.32,4.67 and 36.9 hours,respectively. The photolytic rates of lambda-cyhalothrin under xenon lamp in different organic solvents showed the following order:hexane>methanol> acetonitrile>acetone. |
Key words:Lambda-cyhalothrin;organic solvents;photolysis |
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作者简介:陈玲珑(1982-),女,湖南邵阳人,硕士研究生,主要研究方向:农药残留与环境行为研究。( E-mail:xingyu19800@163.com)
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联 系 人:陈九星,研究员,从事农药残留分析。(E-mail:cjx1964_1@163.com)
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收稿日期:2010-11-11
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