摘要
在实验室测定了溴氟菊酯的光解、不同ｐＨ条件下的水解以及在太湖水稻土、江西红壤与东北黑土等３种不同土壤中的降解。试验结果表明：在３００Ｗ低压汞灯下，溴氟菊酯的水相溶液与其石油醚相济液中的光解均呈二级反应动力学方程，光解半衰期分别为１３．７与９．４ｍｉｎ；在ｐＨ为５，７，９的缓冲溶液中其水解半衰期分别为１５．６，８．３与４．２ｄ；在３种不同土壤中的降解半衰期为４．８～８．８ｄ。
The photolysis of brofluthrinate.the hydrolysis of brofluthrinate in three buffer solutions with different pH values,and the degradation of brofluthrinate in Taihu paddy soil,Jiangxi red soil and Northeastern China black soil were studied in laboratory.The results showed that the photochemical reactions of brofluthrinate in aqueous solution and in petroleum ether solution irradiated by 300 watt low-voltage mercurial lamp fitted to the second order dynamic equation.The photolysis half-lifes of brofluthrinate in the two solutions were 13.7 min and 9.4 min respectively; The hydrolysis half-lifes of brofluthrinate in three buffer solutions with pH value of 5,7 and 9 were 15. 6, 8.3 and 4.2 days respectively;The degradation half-lifes of brofluthrinate in the three different.soils were betwen 4.8 days and 8.8 days.
出处
《农村生态环境》
CSCD
1996年第4期5-7,36,共4页
Rural Eco-Environment
基金
国家"八五"科技攻关项目
关键词
溴氟菊酯
光解
水解
土壤降解
brofluthrinate,photolysis, hydrolysis,degradation
