类Fenton试剂对水溶液中马拉硫磷光化学降解的影响  

The Effect of Fenton-like Reagent to Malathion Photodegradation in Aqueous Solution

作　　者：傅强[1] 杨仁斌[1] 李蓓[1] 郑立国[1] 

机构地区：[1]湖南农业大学农业环境保护研究所,长沙410128

出　　处：《农药》2010年第9期669-670,676,共3页Agrochemicals

摘　　要：以高压汞灯为光源,研究了类Fenton试剂对水溶液中马拉硫磷光化学降解的影响。结果表明:Fe3+、H2O2对马拉硫磷光化学降解敏化作用显著,[Fe3+]∶[H2O2]共同作用下对马拉硫磷的光催化降解影响比单独的Fe3+或H2O2作用的结果要强。[Fe3+]-[H2O2]质量浓度(mg/L)比为0.358∶3.58时,马拉硫磷的半衰期从71.4min缩短到17.1min,光敏率达到76.05%。Using a high pressure mercury lamp（HPML） as light source, the effect of Fenton-like reagent to photolysis of malathion in aqueous solution was studied. The experiment showed, Fe^3＋ and H2O2 had the photosensitivity effect on the photodegradation of malathion. Compared to the single effect, the coexistence of Fe^3＋ and H2O2 strengthened the effect of photodegradation of malathion. When the concentration of Fe^3＋ added to 0.358 mg/L and the concentration of H2O2 added to 3.58 m/L, the photodegradation half-life was dropped to 17.1 min from 71.4 min, with a photosensitive proportion of 76.05%.

关 键 词：马拉硫磷 光解 类FENTON试剂 

分 类 号：X592[环境科学与工程—环境工程]