摘要
研究戊唑醇与氟环唑的光解特征,为其环境风险评估提供依据,采用室内模拟方法,比较了0Lux(黑暗对照)、4 000Lux和8 000Lux光照处理的戊唑醇与氟环唑在水相中的光解差异。结果表明:戊唑醇与氟环唑在水相中的光解变化率0Lux处理均小于3.1%,4 000Lux的光解速率为0.013/h和0.029/h,8 000Lux的光解速率为0.031/h和0.045/h。光解动态特征符合一级动力学方程;戊唑醇与氟环唑在水相中的光解半衰期4 000Lux处理为53.3h和23.9h,而8 000Lux处理为22.4h和15.4h。说明,光照强度对戊唑醇与氟环唑在水相中的光解有重要影响,且戊唑醇光解难于氟环唑。
In order to study on photolysis characteristics of tebuconazole and epoxiconazole,so as to provide the basis for the environmental risk assessment,the indoor simulation method was employed to compare the photolysis differences of epoxiconazole and tebuconazole in the water treated with 0 Lux（dark control）,4000 Lux and 8 000 Lux.Results：Photolysis rate of tebuconazole and epoxiconazole processed by 0 Lux in water were less than 3.1%.To 4000 Lux photolysis rate was 0.013/h^-1 and 0.029/h^-1 respectively,and to 8 000 Lux was 0.031/h^-1 and 0.045/h^-1 separately.The photolysis half-life of tebuconazole and epoxiconazole under 4000 Lux was 53.3 h and 23.9 h,but under 8000 Lux was 22.4 h and 1 5 .4 h.Light intensity had important influence on photolysis of tebuconazole and epoxiconazole in the water and tebuconazole was harder to be photolyzed.
出处
《贵州农业科学》
CAS
北大核心
2014年第9期131-133,136,共3页
Guizhou Agricultural Sciences
基金
中德国际合作项目"化学品生态毒理测试与风险评估技术合作研究"(2011DFB41640)
贵州省林业厅科技项目"核桃青皮无害化处理及活性成分提取关键技术的研究"[黔林科合(2012)18]
关键词
戊唑醇
氟环唑
光解
光照强度
tebuconazole
epoxiconazole
photolysis
illumination intensity
