Occurrence, bioaccumulation and long-range transport of short-chain chlorinated paraffins on the Fildes Peninsula at King George Island, Antarctica
Occurrence, bioaccumulation and long-range transport of short-chain chlorinated paraffins on the Fildes Peninsula at King George Island, Antarctica
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南极洲乔治王岛菲尔德斯半岛短链氯化石蜡的存在、生物累积和远距离迁移
DOI：
10.1016/j.envint.2016.05.005
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发表时间：
2016-09-01
影响因子：
11.8
通讯作者：
Wang, Yawei
中科院分区：
文献类型：
--
作者：
Li, Huijuan;Fu, Jianjie;Wang, Yawei
短链氯化石蜡作为《斯德哥尔摩公约》的候选持久性有机污染物，近年来受到了特别的关注。在这项研究中，我们首次调查了从南极洲乔治王岛和阿德利岛菲尔德斯半岛采集的生物群样本中短链氯化石蜡的浓度。短链氯化石蜡的含量为3.5dg/g~256.6 dg/g(干重)，平均为76.6dg/g干重/gdw，低于中低纬地区。南极边远地区的短链氯化石蜡及其特殊的同系物剖面的检测证实了短链氯化石蜡的长距离迁移行为。南极样品中以短碳链(C-10)同系物为主，占短链氯化石蜡污染总量的56.1%。C-10同系物的这种浓缩表明，较短链状同系物的长距离运输潜力很大。此外，短链氯化石蜡倾向于在脂肪含量较高的物种中富含。在古腹足纲(AGAS)和新腹足纲(NGAS)之间发现了SCCPs的生物放大潜力，并且SCCPs的短链同系物的生物放大因子高于长链同系物。考虑到极地特有物种对环境污染物的不利影响可能是敏感和脆弱的，短链氯化石蜡在极地环境中的生物累积和毒理风险应引起更多的关注。(C)爱思唯尔有限公司出版的2016年。
As a candidate persistent organic pollutant of the Stockholm Convention, short-chain chlorinated paraffins (SCCPs) have recently received particular attention. In this study, we investigated, for the first time, the concentrations of SCCPs in biota samples collected from the Fildes Peninsula at King George Island and Ardley Island, Antarctica. The concentrations of SCCPs ranged from 3.5 to 256.6 dg/g (dry weight, dw), with a mean of 76.6 +/- 61.8 ng/g dw, which was lower than those detected in mid- and low-latitude regions. The long-range transport behaviour of SCCPs was confirmed by both the detection of SCCPs in Antarctic remote areas and their special congener profiles. Short carbon chain (C-10) congeners predominated in the Antarctic samples, which accounted for 56.1% of the total SCCP contamination. Such enrichment of C-10 congeners indicated the high potential for the long-range transport of shorter chain congeners. In addition, SCCPs tended to be enriched in the species with high lipid contents. The biomagnification potential of SCCPs was found between Archeogastropoda (Agas) and Neogastropoda (Ngas), and the biomagnification factors of shorter chain congeners of SCCPs were higher than that of the longer chain ones. Considering that the endemic species in polar regions may be sensitive and vulnerable to the adverse effects of environmental contaminants, more attention should be paid on the bioaccumulation and toxicological risks of SCCPs.in polar environments. (C) 2016 Published by Elsevier Ltd.