乙草胺在水中的光化学降解  

The Photodegradation of Acetochlor in Water

作　　者：花日茂[1] 岳永德[1] 樊德方[2] 

机构地区：[1]安徽农业大学植保系,合肥230036 [2]浙江大学农药环境毒理研究所,杭州310029

出　　处：《农药学学报》2000年第1期71-74,共4页Chinese Journal of Pesticide Science

基　　金：安徽省教委自然科学基金!(No.96 JL 0 0 58);安徽农业大学博士基金

摘　　要：以高压汞灯、氙灯、自然光为光源 ,研究了乙草胺在不同类型水中的光解动态。结果表明 :乙草胺的光量子产率低 ;高压汞灯光照下 ,乙草胺在水中的光解速度为纯水 >河水 >塘水 >稻田水 ,其光解率与水介质的 p H呈正相关 ;不同光源照射下 ,乙草胺于纯水中的光解速率有显著的差异 ,表现为高压汞灯 >氙灯 >自然光 ,同时其光解产物也存在明显的不同。The photolysis trend of acetochlor in different kinds of water under high pressure mercury lamp, xenon lamp and sunlight illuminating was investigated. The result showed that the photoreaction quantum yield at wavelength of 313 nm was 0.0692. Under the high pressure mercury lamp illuminating, the photolysis rate of acetochlor was in the order of pure water>river water>pond water>paddy water, and direct ratio to the pH of water solution. The photolysis rate of acetochlor in the pure water was in the order of high pressure mercury lamp>xenon lamp>sunlight illuminating.

关 键 词：乙草胺 水 光降解 除草剂 农药 光化学 

分 类 号：TQ457.26[化学工程—农药化工] TQ450.7