摘要
本文综述了PCBs在各种溶剂中的紫外光化学反应特性和降解途径 :PCB的光化学反应以氢取代氯的脱氯反应为主 ,除此之外 ,在水或醇等极性溶液中 ,还存在羟基化反应 ;PCB的光化学反应活性与其氯原子的数量和取代位置有关。
Characteristics and pathways of photodegradation of polychlorinated biphenyls (PCBs) in various solutions are reviewed. Dechlorination was attributed to the main pathway for PCB photolysis. In addition, hydroxylation was the minor pathway for PCB photolysis in polar solvents such as water and alcohols. The photo reactivity of PCBs was related to the position and quantity of chlorines on the PCB congeners. The application of photolysis in remediation of PCB contaminated soils is also briefly reviewed.
出处
《环境污染治理技术与设备》
CSCD
北大核心
2001年第6期10-15,共6页
Techniques and Equipment for Environmental Pollution Control
基金
国家自然科学基金 ( 2 0 1770 0 5)
教育部留学回国人员科研启动基金
湖南省自然科学基金 ( 99JJY2 0 0 57)
