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首页> 外文期刊>Ecotoxicology and Environmental Safety >Distribution and primary source analysis of per- and poly-fluoroalkyl substances with different chain lengths in surface and groundwater in two cities, North China
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Distribution and primary source analysis of per- and poly-fluoroalkyl substances with different chain lengths in surface and groundwater in two cities, North China

机译：华北两个城市地表水和地下水中链长不同的全氟和多氟烷基物质的分布和主要来源分析

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摘要

Per- and poly-fluoroalkyl substances (PFASs) have been widely detected in the hydrosphere. The knowledge on the distribution and composition patterns of PFAS analogues with different chain length significantly contribute to their source analysis. In the present study, a regional scale investigation of PFASs in surface river waters and adjacent ground waters was carried out in two cities of China with potential contamination, Tianjin and Weifang. A total of 31 water samples were collected, and 20 PFASs therein were measured by a high-performance liquid chromatograph-tandem mass spectrometer (HPLC-MS/MS). The possible sources of PFASs in the aquatic environment were assessed primarily by concentration patterns as well as hierarchical cluster analysis. In all 4 rivers investigated in the two cities, perfluoroalkyl carboxylic acids (PFCAs) were the dominant compounds contributing over 70% of the PFASs detected. Perfluorooctanoic acid (PFOA) was the dominant PFCA with a concentration range of 8.58-20.3 ng/L in Tianjin and 6.37-25.9 ng/L in Weifang, respectively. On the average, the highest concentration was observed in samples from Dagu Drainage Canal (Dagu) in Tianjin and those short-chain PFASs (C4-C6) was detected with a comparable level of the longer-chain PFASs ( ＞ C6). Specifically, perfluorobutanoic acid (PFBA) was dominant in the short-chain analogues. This indicates that a remarkably increasing input of short-chain PFASs might be related to wastewater treatment plant effluent or industrial discharges, which could be possibly due to the switch of manufacturing to short-chain products. In Weifang, precipitation and subsequent surface runoff as non-point sources could be significant inputs of PFASs into surface water while groundwater was possibly subjected to severe point sources with ΣPFASs concentration up to ～ 100 ng/L. The inconsistent distribution patterns in ground-water suggest complicated pathways of contamination.
机译：在水圈中已广泛检测到全氟烷基物质和多氟烷基物质（PFAS）。具有不同链长的PFAS类似物的分布和组成模式方面的知识极大地有助于其来源分析。在本研究中，在中国天津和潍坊这两个潜在污染的城市中，对地表河水和邻近地下水中的PFASs进行了区域规模调查。总共收集了31个水样品，并通过高效液相色谱-串联质谱仪（HPLC-MS / MS）测量了其中的20个PFAS。主要通过浓度分布图和层次聚类分析评估了水生环境中PFAS的可能来源。在两个城市调查的所有4条河流中，全氟烷基羧酸（PFCA）是主要的化合物，占检测到的PFAS的70％以上。全氟辛酸（PFOA）是主要的PFCA，天津的浓度范围为8.58-20.3 ng / L，潍坊的浓度范围为6.37-25.9 ng / L。平均而言，天津大沽排水渠（大沽）的样品中浓度最高，而短链PFAS（C4-C6）的水平与长链PFAS相当（＞ C6）。具体而言，全氟丁酸（PFBA）在短链类似物中占主导地位。这表明，短链PFAS投入的显着增加可能与废水处理厂的废水或工业排放有关，这可能是由于制造业转向了短链产品。在潍坊，降水和随后的地表径流作为非点源可能是全氟辛烷磺酸向地表水中的重要输入，而地下水可能受到重度点源的影响，其ΣPFAS的浓度高达〜100 ng / L。地下水中分布模式的不一致表明了污染的复杂途径。

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  • 来源
    《Ecotoxicology and Environmental Safety》 |2014年第10期|318-328|共11页
  • 作者

    Yiming Yao; Hongkai Zhu; Bing Li; Hongwei Hu; Tao Zhang; Eriko Yamazaki; Sachi Taniyasu; Nobuyoshi Yamashita; Hongwen Sun;

  • 作者单位

    MOE Key Laboratory of Pollution Processes and Environmental Criteria, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China;

    MOE Key Laboratory of Pollution Processes and Environmental Criteria, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China;

    MOE Key Laboratory of Pollution Processes and Environmental Criteria, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China;

    MOE Key Laboratory of Pollution Processes and Environmental Criteria, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China;

    MOE Key Laboratory of Pollution Processes and Environmental Criteria, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China;

    National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan;

    National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan;

    National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan;

    MOE Key Laboratory of Pollution Processes and Environmental Criteria, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China;

  • 收录信息 美国《科学引文索引》(SCI);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
  • 关键词

    Perfluoroalkyl substances; River water; Groundwater; Source analysis; Precipitation; Distribution;

    机译：全氟烷基物质;河水;地下水;来源分析;沉淀;分配;

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