摘要
以太阳光、氙灯、高压汞灯为光源,研究了哒嗪硫磷、多菌灵、克百威、丁草胺4种农药对氯氰菊酯、溴氰菊酯、氰戊菊酯3种拟菊酯杀虫剂的光解速度及光解效应的影响。结果表明:哒嗪硫磷、多菌灵对氯氰菊酯等3种拟菊酯杀虫剂在3种不同光源的光照处理下均表现出光敏降解效应;然而在太阳光及高压汞灯光源的光照处理下,克百威和丁草胺对3种拟菊酯杀虫剂具有光猝灭降解作用。太阳光照射下氯氰菊酯等3种拟菊酯杀虫剂的光解率与其单位面积上的药剂剂量成反比;
The photosensitive and photoquenching effects of phridaphenthion,carbendazim,carbofuran and butachlor on cypermethrin deltamethrin and fenvalerate on glass plate by xenon lamp,sunlight and high pressure mercury lamp illuminating respectively were studied.The photolytic rates of three pyrethroid insecticides were accelerated by phridaphenthion and carbendazim under these three illuminating lights;while photoquenching effects of carbofuran or butachlor on the photodegradation of the three pyrethroid insecticides were observed under the sunlight and high pressure lamp illuminating.The photolytic rates of the three pyrethroid insecticides were in inverse ratio to its own dosage,while the photosensitive efficiencies were in direct ratio to the dosage of phridaphenthion or carbendazim and the photoquenching efficiencies were in positive correlation with the dosage of carbofuran or butachlor under sunlight.
出处
《中国环境科学》
EI
CAS
CSSCI
CSCD
北大核心
1997年第1期72-75,共4页
China Environmental Science
基金
国家自然科学基金
关键词
拟菊酯杀虫剂
光源
光敏
农药
光解效应
pyrethroid insecticides,photosensitive degradation, photoquenching degradation,three lights.