Novel brominated and organophosphate flame retardants in the atmosphere of Fildes Peninsula, West Antarctica: Continuous observations from 2011 to 2020.
Novel brominated and organophosphate flame retardants in the atmosphere of Fildes Peninsula, West Antarctica: Continuous observations from 2011 to 2020.
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DOI：
10.1016/j.jhazmat.2022.129776
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发表时间：
2022-08
影响因子：
13.6
通讯作者：
Yanfen Hao;Siyuan Xiong;Pu Wang;Rui-qiang Yang;Zhiguo Pei;Yingming Li;Qinghua Zhang;G. Jiang
中科院分区：
文献类型：
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作者：
Yanfen Hao;Siyuan Xiong;Pu Wang;Rui-qiang Yang;Zhiguo Pei;Yingming Li;Qinghua Zhang;G. Jiang
近年来，新型溴化阻燃剂(NBFR)和有机磷酸酯(OPE)广泛存在于世界各地的各种环境基质中，引起了公众的关注。然而，极少有研究报道它们在南极空气中的发生和时间趋势。本研究采用XAD树脂被动采样法，对2011年1月至2020年1月南极西部菲尔德斯半岛空气中NBFR和OPE的浓度、分布和时间趋势进行了研究。总有机污染物的空气浓度(Σ7OPEs)比总NBFR(Σ6NBFR)高一到两个数量级。十溴二苯乙烷和三(2-氯乙基)磷酸分别是最丰富的NBFR和OPE同系物。六溴苯、五溴乙苯和五溴甲苯之间存在显著的正相关，表明它们在南极空气中的存在可能受到类似来源的影响。没有观察到任何NBFR和OPE同系物的空间差异，这意味着来自当地科学研究站的影响很小。用线性回归分析评价了南极空气中NBFR和OPE的时间趋势，观察到Σ6NBFR和Σ70OPEs的下降趋势。这是对南极空气中NBFR和Opes的时间趋势进行全面调查的罕见研究之一，并突出了人们对偏远极地地区这些化学品污染的关注。
Novel brominated flame retardants (NBFRs) and organophosphate esters (OPEs) have been widely detected in various environmental matrices worldwide and raised public concerns in recent years. However, few studies reported their occurrence and temporal trend in Antarctic air. In this study, concentrations, distribution, and temporal trends of NBFRs and OPEs in the air of Fildes Peninsula, West Antarctica, were investigated using XAD resin-based passive air sampling from January 2011 to January 2020. Air concentrations of the total OPEs (Σ7OPEs) were one to two orders of magnitude higher than those of the total NBFRs (Σ6NBFRs). Decabromodiphenyl ethane and tris(2-chloroethyl) phosphate were the most abundant NBFR and OPE congeners, respectively. Significant positive correlations were observed among hexabromobenzene, pentabromoethylbenzene, and pentabromotoluene, indicating that their occurrence in Antarctic air may be affected by similar sources. No spatial differences in any of the NBFR and OPE congeners were observed, implying minor impact from local scientific research stations. Linear regression analysis was used to evaluate the temporal trends of NBFRs and OPEs in Antarctic air, with decreasing trends observed for Σ6NBFRs and Σ7OPEs. This is one of the rare studies providing a comprehensive investigation of the temporal trends in NBFRs and OPEs in Antarctic air and highlights concern regarding the contamination of these chemicals in remote polar regions.