阳离子对戊唑醇在水溶液中光化学降解的影响  

Effects of Positive Ion on photochemical degradation of tebuconazole in Aqueous Solution

作　　者：刘军[1] 吴坚[1] 花日茂[1] 汤锋[1] 操海群[1] 夏海军[1] 

机构地区：[1]湖北省农业科学院测试与科技信息中心,湖北武汉430064

出　　处：《安徽农业科学》2007年第35期11345-11346,共2页Journal of Anhui Agricultural Sciences

摘　　要：[目的]了解戊唑醇在环境中的转归以及阳离子对其光化学降解的影响。[方法]以高压汞灯为光源,选择NH4+、Mn2+、Cu2+、Mg2+4种离子为影响因子,研究了在高压汞灯下戊唑醇在含有4种阳离子的水溶液中的光化学降解情况。[结果]NH4+对戊唑醇的降解具有明显的光敏化作用,且随着NH4+浓度的增加光敏化效应逐渐增强,这有利于水体中残留的戊唑醇的降解。Mn2+、Cu2+Mg2+对戊唑醇也都具有光敏化作用,其光敏化效应的强弱为Mn2+>Mg2+>Cu2+。[结论]该研究可为改善农田环境提供科学的理论依据。Objective The research aimed to get know of the tebuconazole transformation in the environment and the effects of positive ion on its photochemical degradation.Method With high pressure mercury lamp as light source,4 kinds of positive ions including NH^4＋,Mn^2＋,Cu^2＋ and Mg^2＋ were selected as influencing factors to study the photochemical degradation of tebuconazole in the water solution contained 4 kinds of positive ions under high pressure mercury lamp.Result NH^4＋ had obvious photosensitization on the degradation of tebuconazole and the photosensitization effect was gradually increased with the increasing of NH^4＋ concentration,which was favorable for the degradation of rudimental tebuconazole in water body.And Mn^2＋,Cu^2＋ and Mg^2＋ also had photosensitization on tebuconazole and their tebuconazole effects were Mn^2＋〉 Mg^2＋〉 Cu^2＋.Conclusion The research provided scientific and theoretical basis for improving the farmland environment.

关 键 词：戊唑醇 光化学降解 阳离子 水溶液 

分 类 号：O645.16[理学—物理化学]