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首页> 外文期刊>Environmental Science & Technology >Spatial and Interspecies Heterogeneity in Concentrations of Perfluoroalkyl Substances (PFASs) in Seabirds of the Southern Ocean
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Spatial and Interspecies Heterogeneity in Concentrations of Perfluoroalkyl Substances (PFASs) in Seabirds of the Southern Ocean

机译：南大洋海鸟全氟烷基物质（PFASs）浓度的空间和种间异质性

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In this study, we evaluate the main factors driving the exposure of Southern Ocean seabirds to perfluoroalkyl substances (PFASs) across a wide geographic range. Five perfluoroalkane sulfonates (PFSAs, C4-12), 10 perfluoroalkyl carboxylic acids (PFCAs, C4-13), and perfluorooctane sulfonamide (FOSA) were analyzed in plasma (n = 128) from eight species, including penguins, giant petrels, skuas, albatrosses, and shearwaters, breeding at four sites in the Antarctic, sub-Antarctic, and adjacent cool-temperate regions. Mean Sigma PFAS concentrations ranged from 0.53 to 53 ng/g wet weight from black-browed albatross to giant petrels, respectively. As expected due to biomagnification, greater concentrations of most PFASs were found in species near the top of marine food webs such as giant petrels. However, our results suggest that other factors, i.e., metabolic capabilities and spatial movements, can mask interspecies differences in PFASs, especially PFCAs, expected from trophic structure. For instance, trans-equatorial migratory seabirds exhibited PFAS levels and profiles that are consistent with northern hemisphere exposure, reflecting their potential biovector role in the global transport of these pollutants. Among resident species, greater concentrations of PFASs, especially long-chain PFCAs, were found in seabirds breeding or foraging north of the Antarctic Circumpolar Current (ACC) than in those restricted to Antarctic/sub-Antarctic distributions. Moreover, composition profiles of PFAS in Antarctic seabirds agree well with those expected from long-range transport. Our results confirm the importance of the ACC in protecting Antarctic food webs from water-phase-transported PFASs.
机译：在这项研究中，我们评估了在广泛的地理范围内驱动南部海洋海鸟暴露于全氟烷基物质（PFAS）的主要因素。在血浆（n = 128）中分析了八种物种的五种全氟烷磺酸盐（PFSA，C4-12），10种全氟烷基羧酸（PFCA，C4-13）和全氟辛烷磺酰胺（FOSA），包括企鹅，海燕，斯kuas，信天翁和剪枝水在南极，次南极和邻近的温带地区的四个地点繁殖。从黑眉信天翁到巨型海燕，西格玛PFAS的平均浓度分别为湿重0.53至53 ng / g。如预期的那样，由于生物放大作用，在海洋食物网顶部附近的物种（例如巨大的海燕）中发现了大多数PFAS的浓度更高。然而，我们的结果表明，其他因素，即代谢能力和空间运动，可以掩盖从营养结构中预期的PFAS，尤其是PFCA的种间差异。例如，越过赤道的迁徙海鸟的PFAS水平和特征与北半球的暴露情况一致，反映出它们在这些污染物的全球运输中的潜在生物媒介作用。在常住物种中，在南极圆极洋流（ACC）以北繁殖或觅食的海鸟中发现的PFAS浓度，尤其是长链PFCA浓度比限于南极/亚南极分布的海鸟更高。此外，南极海鸟中PFAS的组成特征与远程运输所期望的特征非常吻合。我们的结果证实了ACC在保护南极食物网免受水相运输的PFAS危害方面的重要性。

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  • 来源
    《Environmental Science & Technology》 |2019年第16期|9855-9865|共11页
  • 作者

    Roscales Jose L.; Vicente Alba; Ryan Peter G.; Gonzalez-Solis Jacob; Jimenez Begona;

  • 作者单位

    CSIC IQOG Inst Organ Chem Dept Instrumental Anal & Environm Chem Juan Cierva 3 Madrid 28006 Spain;

    Univ Cape Town DST NRF Ctr Excellence FitzPatrick Inst African Ornithol ZA-7701 Rondebosch South Africa;

    Univ Barcelona Inst Recerca Biodiversitat IRBio Av Diagonal 643 E-08028 Barcelona Spain|Univ Barcelona Dept Biol Evolut Ecol & Ciencies Ambientals Av Diagonal 643 E-08028 Barcelona 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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