一类新的环境有害物质——环境持久性自由基(EPFRs)的研究进展  

The Research Progress on A New Type Harmful Matter-Environmental Persistent Free Radicals(EPFRs)

作　　者：杨颖[1] 孙振亚[2] 

机构地区：[1]武汉理工大学资源与环境工程学院,湖北武汉430070 [2]武汉理工大学材料研究与测试中心,湖北武汉430070

出　　处：《矿物岩石地球化学通报》2012年第3期287-290,共4页Bulletin of Mineralogy, Petrology and Geochemistry

摘　　要：环境持久性自由基(Environmental Persistent Free Radicals,EPFRs)是相对传统关注的短寿命自由基而提出的。EP-FRs在环境中广泛存在,具有更强的环境持续性和毒性,更容易引发肺部和心血管疾病。本文概述了EPFRs的产生机理、存在介质及其危害,尤其强调了对在土壤介质中和环境纳米材料(物质)在光催化过程产生的EPFRs开展研究的重要性,同时介绍了电子顺磁性共振(EPR)等主要检测方法,展望研究前景与方向,并更深层次的认识这类新的有机污染物的环境风险。Compared with traditional short-life free radicals, Environmental Persistent Free Radicals （EPFRs） e- merge in the reaction processes between transition metal elements and organic matters, which have paramagnetie stability and high reactivity. The EPFRs have half-lives of minutes to several hours, which induce more oxidative stress in organisms. In this paper, the formation mechanism of EPFRs, its existent and harm were summarized. Main test methods such as Electron Paramagnetic Resonance（EPR） were introduced and the future research direc- tions on EPFRs also were suggested. Researches indicated that EPFRs not only exist widely in the environment, for instance, in the atmosphere, soil sediment suspension particles and natural organic matters, etc. , but also have powerful environmental persistence and toxicity, and that EPFRs are prone to trigger pulmonary and cardiovascular diseases. The importance of studying the EPFRs generated by soils and nano-materials in the processes of photocatalytic reactions was also specially emphasized. The research on this new type organic pollutant, EPFRs, will help to better understand of their environmental risks.

关 键 词：环境持久自由基 环境危害 过渡金属 土壤 纳米材料 

分 类 号：X502[环境科学与工程—环境工程]