Occurrence and trophic transfer of per- and polyfluoroalkyl substances in an Antarctic ecosystem
Occurrence and trophic transfer of per- and polyfluoroalkyl substances in an Antarctic ecosystem
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南极生态系统中全氟烷基物质和多氟烷基物质的出现和营养转移
DOI：
10.1016/j.envpol.2019.113383
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发表时间：
2020-02-01
影响因子：
8.9
通讯作者：
Jiang, Guibin
中科院分区：
文献类型：
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作者：
Gao, Ke;Miao, Xing;Jiang, Guibin
关于南极地区全氟烷基和多氟烷基物质的出现和营养动力学的资料有限。我们调查了在菲尔德斯半岛在国王乔治岛和阿德利岛，南极洲的生态系统中PFASs的发生。进一步研究了PFASs的剖面、空间分布和营养转移行为。西格玛全氟辛烷磺酸含量范围从藻类的0.50 +/- 38.0纳克/克干重（干重）到新腹足类（Ngas）的4.97 +/- 1.17纳克/克干重不等，低于低纬度和中纬度地区甚至北极地区的含量。全氟丁酸（PFBA）是占主导地位的检测频率在50%以上的所有类型的样品，PFBA的相对贡献的生物群样品的22%至57%。PFBA、全氟庚酸盐（PFHpA）、全氟己烷磺酸盐（PFHxS）和全氟辛烷磺酸盐（PFOS）在古腹足类（Agas）和Ngas之间的生物放大系数分别为0.67 +/- 0.54、0.77 +/- 0.38、1.04 +/- 1.56、3.30 +/- 4.07和1.61 +/- 0.89。PFHxS和PFOS的营养放大因子分别为2.09和2.92，表明它们可以通过食物链进行生物迁移。考虑到新出现的全氟辛烷磺酸的产量增加和不确定的毒理学风险以及南极地区敏感的生态系统，应给予更多的关注，特别是对南极地区的短链全氟辛烷磺酸。(C)2019爱思唯尔有限公司版权所有。
Information on the occurrence and trophodynamics of per- and polyfluoroalkyl substances (PFASs) in the Antarctic region is limited. We investigated the occurrence of PFASs in an ecosystem in the Fildes Peninsula at King George Island and Ardley Island, Antarctica. The profiles, spatial distribution, and trophic transfer behavior of PFASs were further studied. Sigma PFASs ranged from 0.50 +/- 38.0 ng/g dw (dry weight) in algae to 4.97 +/- 1.17 ng/g dw in Neogastropoda (Ngas), which was lower than those in the low- and mid-latitude regions and even Arctic regions. Perfluorobutyric acid (PFBA) was predominant with detection frequencies above 50% in all types of samples, and the relative contribution of PFBA ranged from 22% to 57% in the biota samples. The biomagnification factors of PFBA, perfluoroheptanoate (PFHpA), perfluorohexane sulfonate (PFHxS), and perfluorooctane sulfonate (PFOS) between Archaeogastropoda (Agas) and Ngas were 0.67 +/- 0.54, 0.77 +/- 0.38, 1.04 +/- 1.56, 3.30 +/- 4.07, and 1.61 +/- 0.89, respectively. The trophic magnification factors of PFHxS and PFOS were 2.09 and 2.92, respectively, which indicated that they could be biomagnified through the food chain. Considering the increasing production and uncertain toxicological risks of emerging PFASs and the sensitive ecosystems in Antarctic regions, more attention should be paid, especially for the short-chain ones in the Antarctic region. (C) 2019 Elsevier Ltd. All rights reserved.