H_2O_2存在下冰相中对氯苯酚的光转化  

The photoconversion of parachlorophenol in water ice under the condition of the presence of H_2O_2

作　　者：康春莉[1] 高红杰[1] 郭平[1] 唐晓剑[1] 张歌珊[1] 

机构地区：[1]吉林大学环境与资源学院,吉林长春130012

出　　处：《中国环境科学》2008年第6期561-565,共5页China Environmental Science

基　　金：国家自然科学基金资助项目(20577014)

摘　　要：以125W高压汞灯为光源,在低温(-14^-12℃)条件下,研究了紫外光作用下,冰相中有H2O2存在时对氯苯酚(4-CP)的光转化反应.考察了各种因素对冰相中4-CP光转化的影响以及冰相中4-CP光转化的动力学和机理.结果表明,4-CP初始浓度、H2O2初始浓度、pH值和光强对冰相中4-CP光转化都有较大影响.在本实验条件下,4-CP和TOC的转化率分别达到97%和40%,H2O2的存在能够改变4-CP在冰相中光转化的产物和反应机理.Using 125W high-pressure mercury lamp as light source, under the condition of low temperature（-14--12℃）, the photoconversion reaction of parachlorophenol （4-CP） was studied when H2O2 existed in the water ice. Each factor on 4-CP photoconversion in the water ice and 4-CP photoconversion dynamics and mechanism were inspected. 4-CP initial concentration, H2O2 initial concentration, pH value and light strength all had greater influence on 4-CP photoconversion in the water ice. Under the condition of this experiment, the conversion rates of 4-CP and TOC reached respectively 97% and 40%. H2O2 existence could change the products and mechanism of the photoconversion in the water ice.

关 键 词：光转化 对氯苯酚 过氧化氢 冰相 

分 类 号：X132[环境科学与工程—环境科学]