【作者】 温泉； 苏冠勇； 刘红玲； 于红霞；

【Author】 Wen Quan,Su Guan-yong,Liu Hong-ling,Yu Hong-xia~* State Key Laboratory of Pollution Control and Resources Reuse,School of the Environment,Nanjing University,Nanjing 210093,China

【机构】 南京大学环境学院污染控制与资源化研究国家重点实验室；

【摘要】 多溴联苯醚(PBDEs)作为一种溴系阻燃剂(BFRs),在多种环境介质和生物体内广泛存在且浓度逐年增加,因而越来越多地受到研究者关注。综合PBDEs各方面研究报道,认为其在环境中存在非生物和生物两种转化方式。非生物转化主要是光降解,即PBDEs在光照条件下可通过自由基反应脱溴生成低溴同系物及多溴联苯呋喃(PBDFs)。生物转化则包括微生物降解、生物体代谢和微粒体代谢,其代谢途径除脱溴外,还有加溴、醚键断裂、羟基化和羟基化/脱溴等。本文对PBDEs在环境中不同转化方式的转化速率、转化途径和转化产物等的研究现状进行了综述,旨在对今后研究PBDEs在环境中归趋、生态风险和健康评价起到一定的指导作用。更多还原

【Abstract】 As one of brominated flame retardants(BFRs),polybrominated diphenyl ethers(PBDEs) are of particular concern due to increasing environmental concentrations and their ubiquitous presence in environment.Based on current reports about PBDEs,it is believed that there are two transformation ways in environment,abiotic and biotic transformation.The main abiotic transformation is photodegradation.That means under irradiance PBDEs debrominate rapidly via radical reactions and product lower brominated diphenyl ether and polybrominated dibenzofurans(PBDFs).Biotic transformation includes microbial metabolism,biological metabolism and microsome metabolism. Besides debromination,bromination,ether linkage fission,hydroxylation and hydroxylation/debromination are also metabolic pathways.This paper reviewed the current knowledge of PBDEs transformation type,pathway and products in environment,in order to give advice on study of the fate,ecosystem risk and health assessments of PBDEs.更多还原