H_2O_2存在下冰相中γ-HCH的光转化  

Photoconversion of γ-HCH with the Presence of H_2O_2 in Ice

作　　者：刘婷婷[1] 康春莉[1] 包思琪[1] 陈柏言[1] 武家玉 钟宇博 王依雪 田涛[1] 

机构地区：[1]吉林大学环境与资源学院,长春130012

出　　处：《科学技术与工程》2014年第15期110-113,共4页Science Technology and Engineering

基　　金：国家自然科学基(41073063)资助

摘　　要：研究了模拟太阳光下、H2O2存在时冰相中γ-HCH的光转化反应。考察了γ-HCH光转化动力学、影响因素、反应产物和机理。结果表明:γ-HCH的光转化符合一级动力学方程;SO2-4、HCO-3以及NO-2对γ-HCH的光转化均起抑制作用;γ-HCH的光转化机理主要是还原脱氯和羟基取代;H2O2的加入,使光照24 h后γ-HCH的光转化率从13.28%增大到50.14%。The photoconversion of γ-HCH under simulated sunlight irradiation with the presence of H2O2in ice was studied,including the photoconversion kinetics,influence factors,photoconversion products and mechanisms. The results showed that： the photoconversion of γ-HCH obeyed the first-order kinetics equation; SO2-4,HCO-3and NO-2all inhibited the photoconversion of γ-HCH; the photoconversion mechanisms of γ-HCH were reductive dechlorination and hydroxylation; the photoconversion rate of γ-HCH after irradiation for 24 h increased from 13. 28% to 50. 14%,when H2O2was present.

关 键 词：Γ-HCH H2O2 光转化 冰 羟基自由基 

分 类 号：X131.2[环境科学与工程—环境科学]