环境持久性自由基的产生机理及环境化学行为  

Generation Mechanism and Fate Behaviors of Environmental Persistent Free Radicals

作　　者：韩林[1] 陈宝梁[1] 

机构地区：[1]浙江大学环境科学系浙江省有机污染过程与控制重点实验室,杭州310058

出　　处：《化学进展》2017年第9期1008-1020,共13页Progress in Chemistry

基　　金：国家自然科学基金项目(No.21425730;21537005)资助~~

摘　　要：环境持久性自由基因其能在环境中持续存在且具有潜在环境毒性效应而逐渐受到关注。与瞬时自由基相比,环境持久性自由基的研究相对较少,其产生机理及环境化学行为等方面值得深入研究。本文评述了环境持久性自由基的检测方法、生成机理、种类,环境稳定性、持久性与反应性,以及环境效应及消除方法等方面的研究进展;展望了未来研究方向,并提出环境持久性自由基的迁移转化行为及环境效应是环境化学领域新的研究方向。Environmental persistent free radicals（ EPFRs） can persist in environment for hours to days,and have potential environmental and public health impacts,which has attracted more and more attention in recent years. Environmental persistent free radicals are found to exist in a variety of environmental media,such as combustion particles and organic contaminated soil,and they are considered to be an emerging pollutant recently.Compared with transient free radicals, environmental persistent free radicals have received relatively less attention,and the generating mechanisms and environmental impacts remain unclear. M eanwhile,environmental persistent free radicals are widely distributed in the environment,which makes them more complex in their research. This reviewhighlights EPFRs from the following aspects： detection methods,generating mechanisms,speciation types, environmental characteristics（ persistence, stability, and reactivity）, the harm to the environment and the elimination method. By studying the fate behaviors of environmental persistent free radicals,this article proposes a possible migration pathway in environment. The purpose of this reviewis to have a more comprehensive understanding of the EPFRs,especially to help reduce the harm to the human and environment,and provide scientific basis for researchers to have a deeper study on it.

关 键 词：环境持久性自由基 生成机理 稳定性 持久性 反应性 迁移转化行为 

分 类 号：X131.1[环境科学与工程—环境科学] X131.3