%0 Journal Article
%T Photochemical degradation of chlorpyrifos in water<br>毒死蜱在水溶液中的光化学降解
%A WU Xiangwei
%A NUA Rimao
%A TANG Feng
%A LI Xuede
%A CAO Haiqun
%A YUE Yongde
%A <br>吴祥为
%A 花日茂
%A 汤锋
%A 李学德
%A 操海群
%A 岳永德
%J 应用生态学报
%D 2006
%I 
%X In this paper, the effects of different light sources, temperature, pH, and water quality on the photochemical degradation of clilorpyrifos in water were examined under natural and simulated solar irradiation. The results showed that the photochemical degradation of chlorpyrifos in water followed the first order reaction, and its half-life was 0.62, 6.92, 19.74 and 22.50 h under high pressure mercury lamp (HPML), xenon lamp (XL), ultraviolet lamp (UV), and sunlight (SL) irradiation, respectively. Temperature had a significant effect on the degradation rate of chlorpyrifos, which was increased with increasing temperature and reached the maximum at 35 degrees C. The degradation rate of chlorpyrifos was stable both in acid and in neutral buffer solution, but enhanced in alkaline buffer solution. Water quality also had a significant effect, with a decreasing degradation rate of chlorpyrifos in the sequence of distilled water > tap water > river water > lake wate > paddy water.
%K pH<br>毒死蜱
%K 光源
%K 水质
%K 温度
%K 光解
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=42FEDDFE54F8BCD9D5FD1926ABDD7722&aid=43BEF84E2A610641&yid=37904DC365DD7266&vid=BCA2697F357F2001&iid=DF92D298D3FF1E6E&sid=F1F469D6A2E9D130&eid=615D9FEA4E7369ED&journal_id=1001-9332&journal_name=应用生态学报&referenced_num=10&reference_num=22