中文摘要：

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.

英文摘要：

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.