作 者：
欧晓明;王晓光;柳爱平;黄明智;雷满香;任竞
单 位：
国家农药创制工程技术研究中心 长沙410007;国家农药创制工程技术研究中心;湖南化工研究院农药剂型及应用系统研究所
关键词：
硫肟醚;光解动力学;光猝灭效应;光敏化效应
摘 要：
硫肟醚[O-(3-苯氧苄基)-2-甲硫基-1-(4-氯苯基)丙基酮肟醚]是我国研制成功的具有自主知识产权的一种新型杀虫剂。在室内紫外光(λ=254nm)照射下研究了3种化学物质对硫肟醚在水溶液中的光解。试验结果表明,当邻硝基氯苯、对硝基苯酚和茚三酮等有机化合物分别与硫肟醚以1∶1(体积比)的比例混合后,硫肟醚的光解速率发生了不同程度的改变,其中邻硝基氯苯和对硝基苯酚使硫肟醚的光解速率减慢,光解半衰期从22.30min分别延长到27.75min和29.45min,表现出光猝灭降解效应。而茚三酮却提高了硫肟醚的光解速率,使光解半衰期从22.30min缩短到14.38min,表现为光敏化降解效应。
译 名：
Effect of Several Chemical Substances on Photodegradation of Novel Insecticide HNPC-A9908 in Aqueous Solution
作 者：
OU Xiao-ming1,2,WANG Xiao-guang2,LIU Ai-ping2,HUANG Ming-zhi2,LEI Man-xiang1,REN Jing1(1.Institute of Pesticide Formulations and Application Systems,Hu'nan Research Institute of Chemical Industry,Changsha 410007,China;2.National Engineering and Technology Center for Pesticide Research and Development,Changsha 410007,China)
关键词：
HNPC-A9908;photolysis kinetics;photoextinction effect;photosensitization effect
摘 要：
Effect of several chemical substances on photodegradation of novel insecticide HNPC-A9908[O-(3-phenoxybenzyl) -2-methylthio-1-(4-chlorophenyl) propyl ketone oxime] in soils was studied under the irradiation ofultraviolet light(λ=254 nm) in the laboratory.Experimental results showed that photodegradation rate of HNPC-A9908 varied when the insecticide HNPC-A9908 was combined with the three kinds of chemical substances such asm-nitrobenzenel chloride,p-nitrophenol and ninhydrin at 1:1 ratio(by vol) ,respectively.The organic chemical m-nitrobenzenel chloride and p-nitrophenol made photodegradation half-life of HNPC-A9908 extend from 22.3 to 27.75 minand 29.45 min,respectively,showing a photoextinction effect,and ninhydrin exhibited a photosensitization effect thatchanged from the half-life of 22.3 min into 14.38 min.
