多溴联苯醚(PBDEs)光降解研究现状  

Research status of photodegradation of polybrominated diphenyl ethers( PBDES)

作　　者：刘芃岩[1] 路佳良 孙佳惠 田燕燕[1] 张彦娜[1] 

机构地区：[1]河北大学化学与环境科学学院,保定071002

出　　处：《环境化学》2015年第2期270-278,共9页Environmental Chemistry

基　　金：国家自然科学基金项目(21377033);河北省教育厅重点项目(ZD20131046)资助

摘　　要：多溴联苯醚(polybrominated diphenyl ethers,PBDEs)为一类新型的持久性有机污染物,因其在环境中的广泛分布和生物累积性而备受关注,环境中PBDEs的降解也成为研究热点.光降解是自然环境中PBDEs降解的主要途径之一,而光降解过程中会形成毒性更高的溴代二英.本文在总结国内外PBDEs光降解研究的基础上,对影响PBDEs光降解的因素(诸如:分子结构、光源、介质等)、途径和产物,特别是溴代二英的形成进行了综述,对目前存在问题及进一步的研究方向进行了讨论和展望.Polybrominated diphenyl ethers （PBDEs） are a group of emerging persistent organic pollutants. They have been concerned because of widespread distribution in the environment and high accumulation in vivo. The degradation of PBDEs has also been a hot spot for researches as well. Photodegradation is one of the main degradation pathways of PBDEs in natural environment. Higher toxic polybrominated dibenzo-p-dioxins and dibenzofurans could be formed in the process of photodegradation. In this paper studies on PBDEs photodegradation were summarized, and the influence factors of the photodegradation of PBDEs （such as： molecular structure, light source, medium, etc. ） were reviewed as well as pasthways and products of photodegradation, especially the formation of brominated dioxins. This paper therefore reveals current research problems and presents opportunities for future work in this field.

关 键 词：多溴联苯醚 光降解 途径 影响因素 研究现状 

分 类 号：X592[环境科学与工程—环境工程]