NO_2^-存在条件下冰相中对氯苯酚光转化机理  

Photoconversion Mechanism of Parachlorophenol in the Presence of Nitrite and Ice

作　　者：高红杰[1] 康春莉[1] 郭平[1] 唐晓剑[1] 刘星娟[1] 董德明[1] 

机构地区：[1]吉林大学环境与资源学院,长春130012

出　　处：《应用化学》2008年第10期1130-1133,共4页Chinese Journal of Applied Chemistry

基　　金：国家自然科学基金(20577014)资助项目

摘　　要：以125 W高压汞灯为光源,在低温(-14^-12℃)条件下,研究了紫外光作用下,冰相中有亚硝酸盐存在时,0.8 mmol/L对氯苯酚(4-CP)的光转化反应。结果表明,在180 min内,4-CP的转化率达到80%。在此实验条件下,得到的主要产物为5-氯联苯-2,4′-二醇、苯酚、4-(4-氯-2-硝基苯氧)酚和4-氯-2-硝基酚。由此推断,NO2-的存在能够改变4-CP在冰相中光转化的产物和机理。The photo conversion of parachlorophenol（4-CP） in the presence of ice and nitrite under UV radiation in a temperature range of-14～-12 ℃ was investigated.According to the results,the conversion of 4-CP in the presence of ice reached 80% within 180 min.Under the conditions mentioned above,four photoproducts：5-chlorobiphenyl-2,4′-diol,phenol,4-（4-chloro-2-nitrophenoxy）phenol and 4-chloro-2-nitrophenol were identified,which was a little different from that of the photoreaction in solution.The presence of nitrite could change the products and mechanism of the photoconnersion of 4-CP in ice.

关 键 词：对氯苯酚 亚硝酸盐 冰 光转化 机理 

分 类 号：O644.1[理学—物理化学]