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Combining Monitoring Data and Modeling Identifies PAHs as Emerging Contaminants in the Arctic

机译:结合监测数据和建模,可将多环芳烃识别为北极地区的新兴污染物

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摘要

Protecting Arctic ecosystems against potential adverse effects from anthropogenic activities is recognized as a top priority. In particular, understanding the accumulation and effects of persistent organic pollutants (POPs) in these otherwise pristine ecosystems remains a scientific challenge. Here, we combine more than 20 000 tissue concentrations, a food web bioaccumulation model, and time trend analyses to demonstrate that the concentrations of legacy-POPs in the Barents/ Norwegian Sea fauna decreased 10-fold between 1985 and 2010, which reflects regulatory efforts to restrict these substances. In contrast, concentrations of fossil fuel derived PAHs in lower trophic levels (invertebrates and fish) increased 10 to 30 fold over the past 25 years and now dominate the summed POP burden (25 POPs, including 11 PAHs) in these biota. Before 2000, PCBs dominated the summed POP burden in top predators. Our findings indicate that the debate on the environmental impacts of fossil fuel burning should move beyond the expected seawater temperature increase and examine the possible environmental impact of fossil fuel derived PAHs.
机译:保护北极生态系统免受人为活动的潜在不利影响是当务之急。特别是,要了解这些原始生态系统中持久性有机污染物(POPs)的积累和影响仍然是一项科学挑战。在这里,我们结合了2万多个组织浓度,一个食物网络生物蓄积模型和时间趋势分析,以证明1985年至2010年之间,巴伦支/挪威海动物区系中的传统持久性有机污染物的浓度下降了10倍,这反映了监管工作限制这些物质。相反,在过去25年中,营养级较低的化石燃料衍生的PAHs(无脊椎动物和鱼类)的浓度增加了10到30倍,现在占这些生物群中POP总负担(25种POP,包括11种PAHs)的主导地位。在2000年之前,多氯联苯在主要捕食者中加总了POP负担。我们的研究结果表明,有关化石燃料燃烧对环境影响的辩论应该超越预期的海水温度升高,并研究化石燃料衍生的多环芳烃对环境的可能影响。

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  • 来源
    《Environmental Science & Technology》 |2011年第20期|p.9024-9029|共6页
  • 作者单位

    Laboratory of Environmental Toxicology and Applied Ecology, Ghent University, Plateaustraat 22, 9000 Ghent, Belgium;

    Aquatic Ecology and Ecotoxicology Department, University of Amsterdam, PO box 94248, 1090 GE Amsterdam, The Netherlands;

    Department of Environmental Science, Institute for Water and Wetland Research, Radboud University, Heijendaalseweg 135,6525 AJ Nijmegen, The Netherlands;

    Centre for Estuarine and Marine Ecology, Netherlands Institute of Ecology (NIOO-KNAW), Korringaweg 7, 4401 NT Yerseke,The Netherlands;

    Laboratory of Environmental Toxicology and Applied Ecology, Ghent University, Plateaustraat 22, 9000 Ghent, Belgium;

  • 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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  • 正文语种 eng
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