3种农药对异菌脲的光解影响及相互作用研究  

Effects of Three Kinds of Pesticides on the Photo-degradation of Iprodione and Its Inter-relationship

作　　者：花日茂[1] 程燕[1] 葛世彬[1] 杨晓凡[1] 李学德[1] 徐利[1] 汤锋[1] 操海群[1] 岳永德[1] 

机构地区：[1]安徽农业大学环境科学系,合肥230036

出　　处：《安徽农业大学学报》2003年第4期353-357,共5页Journal of Anhui Agricultural University

基　　金：国家自然科学基金项目(20277001)资助。

摘　　要：研究高压汞灯光照下,毒死蜱、三唑酮、功夫菊酯3种农药对杀菌剂异菌脲光化学降解的影响。结果表明:这3种农药与异菌脲等剂量混合时,对异菌脲均表现出光敏化作用,其光敏化强度为毒死蜱>三唑酮>功夫菊酯;不同剂量混合时,毒死蜱对异菌脲的光敏效率与光照时间、剂量呈负相关,表现量-质转化效应。同时,异菌脲对毒死蜱的光解也产生一定的影响,在剂量比低于1∶1时,光敏强度随毒死蜱含量的增多而增强;当剂量比高于1∶1时,异菌脲对毒死蜱表现出光猝灭效应,且光猝灭效应强度与异菌脲相对剂量呈正相关。The effects of three pesticides (chlorpyrifos,triadimefon and cyhalothrin) on the photo-degradation of iprodione were studied under the illumination of high-pressure mercury lamp. The photolytic rates of the iprodione were accelerated with a ratio (1∶1) of iprodione to either of the three pesticides,the order of photosensitive efficiencies was:chlorpyrifos>triadimefon>cyhalothrin;when the ratio changed to different dosages of chlorpyrifos,we observed the photosensitive efficiencies were in inverse ratio to its own dosage and irradiation time.At the same time,the rates of triadimefon were increased in the case of iprodione.Meanwhile,the effects of iprodione on the photo-degradation of chlorpyifos were investigated.The photosensitive efficiencies were in positive correlation with dosage of chlorpyrifos at the lower ratio,and the photoquenching efficiencies were in inverse ratio to its dosage at the higher ratio.

关 键 词：异菌脲 农药 光化学降解 安全性评价 

分 类 号：S481.8[农业科学—农药学]