Chemical Industry and Engineering Progress ›› 2017, Vol. 36 ›› Issue (11): 4243-4249.DOI: 10.16085/j.issn.1000-6613.2017-0541

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Formation of environmental persistent free radicals and its influence on organic pollutant behavior:a review

WANG Peng, WU Min, LI Hao, LANG Di, PAN Bo   

  1. Faculty of Environmental Science and Engineering, Kunming University of Science & Technology, Kunming 650500, Yunnan, China
  • Received:2017-03-28 Revised:2017-05-08 Online:2017-11-05 Published:2017-11-05

环境持久性自由基对有机污染物环境行为的影响研究进展

王朋, 吴敏, 李浩, 郎笛, 潘波   

  1. 昆明理工大学环境科学与工程学院, 云南 昆明 650500
  • 通讯作者: 吴敏,教授,研究方向为有机污染物环境行为。
  • 作者简介:王朋(1987-),男,博士研究生。
  • 基金资助:
    国家自然科学基金面上基金(41473116)及国家自然科学基金面上基金(41673098)项目。

Abstract: Environmentally persistent free radicals (EPFRs) as new type of contaminants are detected in soil/sediment,suspended particles,natural organic matter and water and thus are ubiquitous. They may have higher reactivity and risks to organisms than the parent organic chemicals and thus it is urgent to understand the mechanisms for EPFRs generation and environmental behavior. Previous studies mainly focused on the generation mechanism of EPFRs from degradation process of organic pollutants in extreme condition(combustion or high temperature). However,the concern of EPFRs with more general under natural conditions is not enough. The extended study on natural conditions will definitely deepen our understanding on organic chemical risks. This paper reviewed the existence and generation mechanism of EPFRs in environmental medium,synthetic carbonaceous materials and degradation of organic pollutants. The influence of EPFRs to precursor organic pollutants and the promotion degradation of other organic pollutants in system were firstly summarized. The importance of understanding the environmental behaviors and risk of organic pollutants with EPFRs participating were mentioned,and the future research directions were suggested.

Key words: environmental persistent free radicals, generation mechanism, organic pollutant, degradation

摘要: 环境持久性自由基(EPFRs)作为一类新型的环境风险物质在环境中普遍存在,具有较高的反应活性和环境风险。以往研究主要关注污染物在燃烧或者高温等极端条件下EPFRs的产生机制,对更具普遍性的自然条件下产生的EPFRs的环境行为和风险关注不够。本文综述了环境介质、人工合成碳基材料以及有机污染物降解过程中EPFRs的存在和产生机制,着重论述了EPFRs对前体有机污染物环境行为的影响,以及EPFRs的存在能促进环境中共存有机污染物的降解。最后提出了EPFRs参与有机污染物的降解过程可能是理解有机污染物环境行为、风险研究中所缺失的重要环节,并对以后应注重开展的研究进行了展望。

关键词: 环境持久性自由基, 产生机制, 有机污染物, 降解

CLC Number: 

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