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首页> 外文期刊>Environmental Science & Technology >Temporal Shifts in Poly- and Perfluoroalkyl Substances (PFASs) in North Atlantic Pilot Whales Indicate Large Contribution of Atmospheric Precursors
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Temporal Shifts in Poly- and Perfluoroalkyl Substances (PFASs) in North Atlantic Pilot Whales Indicate Large Contribution of Atmospheric Precursors

机译：北大西洋试点鲸鱼中聚全氟烷基物质（PFAS）的时间变化表明大气前体的贡献很大

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摘要

Poly- and perfluoroalkyl substances (PFASs) are persistent, bioaccumulative anthropogenic compounds associated with adverse health impacts on humans and wildlife. PFAS production changed in North America and Europe around the year 2000, but impacts on wildlife appear to vary across species and location. Unlike other mammal species, cetaceans lack the enzyme for transforming an important intermediate precursor (perfluorooctane sulfonamide: FOSA), into a prevalent compound in most wildlife (perfluorooctanesulfonate: PFOS). Thus, their tissue burden differentiates these two compounds while other mammals contain PFOS from both direct exposure and precursor degradation. Here we report temporal trends in 15 PFASs measured in muscle from juvenile male North Atlantic pilot whales (Globicephala melas) harvested between 1986 and 2013. FOSA accounted for a peak of 84% of the 15 PFASs around 2000 but declined to 34% in recent years. PFOS and long-chained PFCAs (C9-C13) increased significantly over the whole period (2.8% yr~(-1) to 8.3% yr~(-1)), but FOSA declined by 13% yr~(-1) after 2006. Results from FOSA partitioning and bioaccumulation modeling forced by changes in atmospheric inputs reasonably capture magnitudes and temporal patterns in FOSA concentrations measured in pilot whales. Rapid changes in atmospheric FOSA in polar and subpolar regions around 2000 helps to explain large declines in PFOS exposure for species that metabolize FOSA, including seafood consuming human populations. This work reinforces the importance of accounting for biological exposures to PFAS precursors.
机译：多氟烷基和全氟烷基物质（PFAS）是持久的生物蓄积人为化合物，与对人类和野生生物的不良健康影响相关。 2000年前后，北美和欧洲的PFAS生产发生了变化，但对野生动植物的影响似乎因物种和地区而异。与其他哺乳动物不同，鲸类动物缺乏将重要的中间体前体（全氟辛烷磺酰胺：FOSA）转化为大多数野生生物中普遍存在的化合物（全氟辛烷磺酸盐：PFOS）的酶。因此，它们的组织负担将这两种化合物区分开来，而其他哺乳动物则从直接暴露和前体降解中都含有全氟辛烷磺酸。在这里，我们报告了从1986年至2013年收获的北大西洋少年雄性鲸鱼（Globicephala melas）肌肉中测得的15种PFAS的时间趋势。FOSA占2000年左右15种PFAS高峰的84％，但近年来下降至34％ 。 PFOS和长链PFCAs（C9-C13）在整个期间显着增加（2.8％yr〜（-1）至8.3％yr〜（-1）），但FOSA在此之后下降了13％yr〜（-1）。 2006年。由大气输入的变化强迫进行的FOSA分区和生物积累模型的结果合理地捕获了在试验鲸中测得的FOSA浓度的大小和时间模式。 2000年前后，极地和亚极地区的大气FOSA迅速变化有助于解释代谢FOSA的物种（包括消耗海产品的人群）的全氟辛烷磺酸暴露量大幅下降。这项工作加强了对PFAS前体的生物暴露进行核算的重要性。

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  • 来源
    《Environmental Science & Technology》 |2017年第8期|4512-4521|共10页
  • 作者

    Clifton Dassuncao; Xindi C. Hu; Xianming Zhang; Rossana Bossi; Maria Dam; Bjarni Mikkelsen; Elsie M. Sunderland;

  • 作者单位

    Department of Environmental Health, Harvard T.H. Chan School of Public Health, Harvard University, Boston, Massachusetts 02115, United States,Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States;

    Department of Environmental Health, Harvard T.H. Chan School of Public Health, Harvard University, Boston, Massachusetts 02115, United States,Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States;

    Department of Environmental Health, Harvard T.H. Chan School of Public Health, Harvard University, Boston, Massachusetts 02115, United States,Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States;

    Department of Environmental Science, Aarhus University, Arctic Research Centre (ARC), Frederiksborgvej 399, PO Box 358, DK-4000 Roskilde, Denmark;

    Environment Agency, PO Box 2048, FO-165 Argir, Faroe Islands;

    Museum of Natural History, Torshavn, Faroe Islands;

    Department of Environmental Health, Harvard T.H. Chan School of Public Health, Harvard University, Boston, Massachusetts 02115, United States,Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States;

  • 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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