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首页> 外文期刊>Environmental Science & Technology >Mass Balance of Perfluorinated Alkyl Acids in a Pristine Boreal Catchment
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Mass Balance of Perfluorinated Alkyl Acids in a Pristine Boreal Catchment

机译：原始北方集水区中全氟烷基酸的质量平衡

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摘要

Mass balances of ten individual perfluorinated alkyl acids (PFAAs) in two nested pristine catchments in Northern Sweden with different sizes and hydrological functions were assembled for 2011-2012. Concentrations of PFAAs in rain and snowmelt, as well as in streamwater at the outlet of the two watersheds were measured and used to calculate PFAA atmospheric inputs to and riverine outputs from the catchments. The results generally showed a great excess of PFAA inputs for both catchments over the whole study year. However, during the spring flood period, the inputs and outputs were within a factor of 2 for several PFAAs and the streamwater showed PFAA patterns resembling the patterns in rain (as opposed to snowmelt), suggesting that snowmelt water infiltrating the ground had displaced water from the previous summer. Comparison of PFAA mass balances between the two catchments further suggested that atmospheric inputs of short-chain (replacement) perfluoroalkyl carboxylic acids had increased in the years before sampling, while inputs of the legacy perfluorooctane sulfonic acid had decreased. Overall, the mass balances indicate that a considerable portion of the PFAAs deposited from the atmosphere are stored in soil and may be released to surface and marine water environments in the future.
机译：汇总了2011-2012年瑞典北部两个嵌套原始集水区中十个单独的全氟化烷基（PFAA）的质量平衡，这些集水区的大小和水文功能不同。测量了两个流域出口处的雨雪和融雪中以及河水中的PFAAs浓度，并将其用于计算流域的PFAA大气输入和河流输出。结果总体上表明，在整个研究年度中，两个流域的PFAA输入量都大大超出了。然而，在春季洪水期间，几个PFAA的投入和产出均在2的范围内，并且溪流的PFAA形态类似于雨中的形态（与融雪相反），这表明渗入地面的融雪水已经驱逐了水体中的水分。前一个夏天。比较两个流域的PFAA质量平衡，进一步表明，在采样前的几年中，短链（置换）全氟烷基羧酸的大气输入量增加了，而传统全氟辛烷磺酸的输入量却减少了。总体而言，质量平衡表明，从大气中沉积的PFAA中有相当一部分存储在土壤中，将来可能释放到地表和海水环境中。

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  • 来源
    《Environmental Science & Technology》 |2015年第20期|12127-12135|共9页
  • 作者

    Marko Filipovic; Hjalmar Laudon; Michael S. McLachlan; Urs Berger;

  • 作者单位

    Stockholm University, Department of Environmental Science and Analytical Chemistry (ACES), SE-10691 Stockholm, Sweden;

    Swedish University of Agricultural Sciences (SLU), Department of Forest Ecology and Management, SE-90183 Umea, Sweden;

    Stockholm University, Department of Environmental Science and Analytical Chemistry (ACES), SE-10691 Stockholm, Sweden;

    Stockholm University, Department of Environmental Science and Analytical Chemistry (ACES), SE-10691 Stockholm, Sweden,Helmholtz Centre for Environmental Research-UFZ, Department Analytical Chemistry, Permoserstrasse 15, DE-04318 Leipzig, Germany;

  • 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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