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首页> 外文期刊>Environmental Science & Technology >Role of Snow Deposition of Perfluoroalkylated Substances at Coastal Livingston Island (Maritime Antarctica)
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Role of Snow Deposition of Perfluoroalkylated Substances at Coastal Livingston Island (Maritime Antarctica)

机译：雪沉积在沿海利文斯顿岛（南极海洋）中全氟烷基化物质的作用

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摘要

Perfluordalkyl substances (PFAS) are ubiquitous in the environment, including remote polar regions. To evaluate the role of snow deposition as an input of PFAS to Maritime Antarctica, fresh snow deposition, surface snow, streams from melted snow, coastal seawater, and plankton samples were collected over a three-month period (December 2014—February 2015) at Livingston Island. Local sources of PFASs were significant for perfluoroalkyl sulfonates (PFSAs) and C7—14 perfluoroalkyi carboxylates (PFCAs) in snow but limited to the transited areas of the research station. The concentrations of 14 ionizable PFAS (JPFAS) in freshly deposited snow (760—3600 pg L_1) were 1 order of magnitude higher than those in background surface snow (82—430 pg L_1). J]PFAS ranged from 94 to 420 pg L_l in seawater and from 3.1 to 16 ng g^-1 in plankton. Ratios of individual PFAS concentrations in freshly deposited snow relative to surface snow (Csd/C^^,), snowmelt (Csd/Csm), and seawater (CSD/Csw) were close to 1 (from 0.44 to 1.4) for all perfluorooctanesulfonate (PFOS) isomers, suggesting that snowfall does not contribute significandy to PFOS in seawater. Conversely, these ratios for PFCAs ranged from 1 to 33 and were positively correlated with the number of carbons in the PFCA alkylated chain. These trends suggest that snow deposition, scavenging sea-salt aerosol bound PFAS, plays a role as a significant input of PFCAs to the Maritime Antarctica.
机译：全氟烷基物质（PFAS）在环境中无处不在，包括偏远的极地地区。为了评估积雪作为PFAS向南极海洋的投入的作用，在三个月的时间段（2014年12月至2015年2月）收集了新鲜积雪，地表雪，融雪流，沿海海水和浮游生物样本。利文斯顿岛。 PFAS的本地来源对于雪中的全氟烷基磺酸盐（PFSA）和C7-14全氟烷基羧酸盐（PFCA）十分重要，但仅限于研究站的过境区域。新鲜沉积的雪（760-3600 pg L_1）中的14种可离子化PFAS（JPFAS）的浓度比背景表面雪（82-430 pg L_1）中的浓度高1个数量级。 J] PFAS在海水中的浓度范围为94至420 pg L_1，在浮游生物中的浓度为3.1至16 ng g ^ -1。对于全氟辛烷磺酸盐而言，新鲜沉积的雪中单个PFAS浓度相对于表雪（Csd / Cs ^），融雪（Csd / Csm）和海水（CSD / Csw）的比率接近1（从0.44到1.4）。 PFOS）异构体，这表明降雪不会对海水中的PFOS产生重大影响。相反，PFCA的这些比例在1到33之间，并且与PFCA烷基化链中的碳数呈正相关。这些趋势表明，积雪，清除了海盐气溶胶结合的PFAS，是海洋南极洲PFCA的重要输入。

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  • 来源
    《Environmental Science & Technology》 |2017年第15期|8460-8470|共11页
  • 作者

    Paulo Casal; Yifeng Zhang; Jonathan W. Martin; Mariana Pizarro; Begofia Jimenez; Jordi Dachs;

  • 作者单位

    Institute of Environmental Assessment and Water Research, Spanish National Research Council (IDAEA-CSIC), Barcelona, Catalonia 08034, Spain;

    Division of Analytical and Environmental Toxicology, Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, Alberta T6G 2G3, Canada;

    Division of Analytical and Environmental Toxicology, Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, Alberta T6G 2G3, Canada;

    Institute of Environmental Assessment and Water Research, Spanish National Research Council (IDAEA-CSIC), Barcelona, Catalonia 08034, Spain;

    Department of Instrumental Analysis and Environmental Chemistry, Institute of Organic Chemistry, Spanish National Research Council (IQOG-CSIC), Madrid 28006, Spain;

    Institute of Environmental Assessment and Water Research, Spanish National Research Council (IDAEA-CSIC), Barcelona, Catalonia 08034, Spain;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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