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我国环境中溴代阻燃剂研究现状·BFRs in China

我国是生产和使用溴代阻燃剂(BFRs)的大国,近年来在我国开展的不同环境介质中BFRs的监测研究表明我国不同区域均受到不同程度的BFRs污染。本文对近年来的研究进行了回顾,全面分析汇总了我国BFRs的时空变化趋势,研究表明:(1)电子垃圾(e-waste)拆解地周围的多溴联苯醚(PBDEs)污染较重,而其他阻燃剂则未发现此规律;(2)在部分区域的母乳监测研究表明,PBDEs浓度开始呈现下降趋势;(3)室内灰尘是阻燃剂的重要暴露途径,不容忽视;(4)电子垃圾拆解工人具有较高的“职业”暴露。该成果发表在Chemosphere上。【全文链接

Abstract

Brominated flame retardants (BFRs) which were detected extensively in environmental and biota samples worldwide, have raised significant concerns during past decades for their persistence, bioaccumulation and potential toxicity to ecological environment and human health. In this paper, we have compiled and reviewed existing literature on the contamination status of BFRs in abiotic and biotic environments in China, including polybrominated diphenyl ethers (PBDEs), hexabromocyclododecane,
tetrabromobisphenol A and new BFRs. Temporal trends were also summarized and evaluated. Based on this review, it has been concluded that (1) high concentrations of PBDEs were generally related to the ewaste disposal processing, while the spatial distribution pattern of other BFRs was not necessarily in accordance with this; (2) extremely high concentrations of BFRs in indoor dust emphasized the importance of indoor contamination to human body burdens, while more work need to be done to confirm its contribution; (3) PBDEs in electronics dismantling workers were higher compared to the general population, indicating the occupational exposure should be of particular concern; (4) more data are now becoming available for BFRs in aquatic and terrestrial organisms not previously studied, while studies that consider the occurrence of BFRs in organisms of different trophic levels are still of urgent need for evaluating the fate of BFRs in the food web; and (5) limited data showed a decreasing trend for PBDEs, while more data on time trends of BFR contamination in various matrices and locations are still needed before the impact of regulation of BFRs can be assessed.

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