氰氟草酯水解动力学研究

赵莉; 樊晓青; 朱国念

氰氟草酯水解动力学研究

1.
上海市农药检定所上海 201103
2.
浙江大学农药与环境毒理研究所杭州 310029

计量
- 文章访问数: 1177
- HTML全文浏览量: 50
- PDF下载量: 419
- 被引次数: 0
出版历程
- 收稿日期: 2008-11-17

Study on Hydrolysis Dynamics of Cyhalofop-butyl

1.
The Institute for the Control of Agrochemical,Shanghai 201103,China
2.
Institute of Pesticide and Environmental Toxicology,Zhejiang University,Hangzhou 310029,China

摘要

摘要: 研究了氰氟草酯在不同温度、不同pH条件下于水溶液中的降解动态,并通过液相色谱法对水解产物进行了鉴定。结果表明,氰氟草酯在酸性条件下比较稳定,在微酸性及中性条件下水解速度加快,在碱性条件下水解迅速;温度升高水解反应加速,水解反应温度效应系数为2.1~3.0,活化能为74.90 kJ/mol。水解产物主要是(R)-2- -丙酸、(R)-2- -丙酸和(R)-2- -丙酸。
- 氰氟草酯 /
- 水解 /
- 动力学
Abstract: The hydrolysis dynamics of cyhalofop-butyl in aquatic solution was studied.The results showed that the first-order constant (K) was dependent on pH and temperature.The hydrolysis products were identified by HPLC.Cyhalofop-butyl was relatively stable in acid aqueous buffer solutions (pH 5.0),and its stability decreased as pH increased in aqueous buffer solutions.It was readily decomposed in alkaline water.Higher temperature was found to accelerate the hydrolysis.Temperature coefficient of hydrolysis for cyhalofop-butyl was 2.05~3.00.The activation energy of hydrolysis for cyhalofop-butyl was 74.90 kJ/mol.The main hydrolysis products of cyhalofop-butyl were R-(+)-2- propanoic acid,R-(+)-2- -propanoic acid and 2- -propanoic acid.
- cyhalofop-butyl /
- hydrolysis /
- dynamics

HTML全文

参考文献(8)

GU Dan(顾丹).新颖选择性除草剂——氰氟草酯[J] .The World Pesticide(世界农药),2000,22(3):55-57.

ZHU Guo-nian(朱国念),WU Gang(吴刚),ZHAO Li(赵莉),et al.氰氟草酯及其活性代谢物在水溶液中的光化学降解研究[J].Chin J Pestic Sci(农药学学报),2003,5(3):1-4.

ZHU Guo-nian(朱国念),ZHAO Li(赵莉).氰氟草酯在池塘水中的生物降解[J].Agricultural Environment Protection (农业环境保护),2002,(2):16-17.

Analytical Chemistry Teaching Research Section of Hangzhou University (杭州大学分析化学教研室).Handbook of Analytical Chemistry(分析化学手册)[M].北京(Beijing): Chemistry Industry Press(化学工业出版社),1982:20-27.

MO Han-hong(莫汉宏).The Papers of Environmental Chemistry Behavior of Pesticides(农药环境化学行为论文集) .Beijing(China): China Science & Technology Press (中国科学技术出版),1994:54-55.

ZHENG He-hui (郑和辉),YE Chang-ming (叶常明).乙草胺和丙草胺的水解及其动力学[J].Environ Chem (环境化学),2001,20(2):168-171.

CHEN Xi-ling (陈锡岭) ,XU Xin-ming (徐新明) ,FAN De-fang (樊德方).温度和pH值对雷克拉水解速率的影响[J].Agro-environ Prot (农业环境保护),1999,18(6):275-277.

YANG Ke-wu (杨克武) ,MO Han-hong (莫汉宏) ,AN Feng-chun (安凤春),et al.有机化合物水解的研究方法[J].Environ Chem (环境化学),1994,13 (3):206-209. (Ed.JIN S H)

施引文献

资源附件(0)

访问统计