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首页> 外文期刊>Environmental Science & Technology >Temporal Trends of Perfluoroalkyl Contaminants in Polar Bears (Ursus maritimus) from Two Locations in the North American Arctic,1972-2002
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Temporal Trends of Perfluoroalkyl Contaminants in Polar Bears (Ursus maritimus) from Two Locations in the North American Arctic,1972-2002

机译:1972-2002年北美北极地区两个地点的北极熊(Ursus maritimus)中全氟烷基污染物的时间趋势

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摘要

Perfluoroalkyl substances are globally distributed anthropogenic contaminants.Their production and use have increased dramatically from the early 1980s.While many recent publications have reported concentrations of perfluorooctane sulfonate (PFOS) and other perfluoroalkyl acids (PFAs) in biotic and abiotic samples,only limited work has addressed temporal trends.In this study we analyzed archived polar bear (Ursus maritimus) livertissue samples from two geographic locations in the North American Arctic,collected from 1972 to 2002.The eastern group,taken from the vicinity of northern Baffin Island,Canada,comprised 31 samples,and the western group,from the vicinity of Barrow,Alaska,comprised 27 samples.Samples were analyzed for perfluorocarboxylic acids (PFCAs) from carbon chain length C8 to C15,perfluorohexane sulfonate,PFOS,the neutral precursor perfluorooctane sulfonamide (PFOSA),as well as 8:2 and 10:2 fluorotelomer acids and their alpha,beta unsaturated acid counterparts.Concentrations of PFOS and PFCAs with carbon chain lengths from C9 to.C11 showed an exponential increase between 1972 and 2002 at both locations.Doubling times ranged from 3.6 +- 0.9 years for perfluorononanoic acid in the eastern group to 13.1+- 4.0 years for PFOS in the western group.PFOSA showed decreasing concentrations over time at both locations,while the remaining PFAs showed no significant trends or were not detected in any sample.The doubling time for PFOS was similar to the doubling time of production of perfluoroctylsulfonyl-fluoride-based products during the 1990s.
机译:全氟烷基物质是全球分布的人为污染物,自1980年代初以来,其生产和使用已急剧增加,尽管许多最新出版物报道了生物和非生物样品中全氟辛烷磺酸(PFOS)和其他全氟烷基酸(PFA)的浓度,但工作有限在本研究中,我们分析了从1972年至2002年在北美北极地区两个地理位置收集的北极熊(Ursus maritimus)肝组织样本。东组,取自加拿大北巴芬岛附近。来自阿拉斯加巴罗附近的31个样品和西组的27个样品。分析了样品的碳链长度C8至C15的全氟羧酸(PFCA),全氟己烷磺酸盐,PFOS,中性前体全氟辛烷磺酰胺(PFOSA)以及8:2和10:2的含氟端粒酸及其对应的α,β不饱和酸。碳链长度从C9到C11的PFOS和PFCA在1972年至2002年期间在两个地点均呈指数增长,东部组全氟壬酸的倍增时间从3.6±0.9年到PFOS的13.1±4.0年不等。在西部地区,全氟辛烷磺酸在两个地点的浓度均随时间降低,而其余全氟辛烷磺酸则无明显趋势或在任何样品中均未检出。全氟辛烷磺酸的加倍时间类似于全氟辛基磺酰氟基的加倍时间。 1990年代的产品。

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  • 来源
    《Environmental Science & Technology》 |2006年第4期|p.1139-1143|共5页
  • 作者单位

    Department of Environmental Biology,University of Guelph,Bovey Building,Guelph,Ontario NIG 2W1,Canada,Carleton University,Ottawa,Ontario K15 5B6,Canada,Department of Chemistry,University of Toronto,80 St.George Street,Toronto,Ontario M5S 3H6,Canada,N;

    Department of Environmental Biology,University of Guelph,Bovey Building,Guelph,Ontario NIG 2W1,Canada,Carleton University,Ottawa,Ontario K15 5B6,Canada,Department of Chemistry,University of Toronto,80 St.George Street,Toronto,Ontario M5S 3H6,Canada,N;

    Department of Environmental Biology,University of Guelph,Bovey Building,Guelph,Ontario NIG 2W1,Canada,Carleton University,Ottawa,Ontario K15 5B6,Canada,Department of Chemistry,University of Toronto,80 St.George Street,Toronto,Ontario M5S 3H6,Canada,N;

    Department of Environmental Biology,University of Guelph,Bovey Building,Guelph,Ontario NIG 2W1,Canada,Carleton University,Ottawa,Ontario K15 5B6,Canada,Department of Chemistry,University of Toronto,80 St.George Street,Toronto,Ontario M5S 3H6,Canada,N;

    Department of Environmental Biology,University of Guelph,Bovey Building,Guelph,Ontario NIG 2W1,Canada,Carleton University,Ottawa,Ontario K15 5B6,Canada,Department of Chemistry,University of Toronto,80 St.George Street,Toronto,Ontario M5S 3H6,Canada,N;

  • 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);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 环境化学;
  • 关键词

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