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首页> 外文期刊>Environmental Science & Technology >Occurrence of Perfluoroalkyl Acids Including Perfluorooctane Sulfonate Isomers in Huai River Basin and Taihu Lake in Jiangsu Province, China
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Occurrence of Perfluoroalkyl Acids Including Perfluorooctane Sulfonate Isomers in Huai River Basin and Taihu Lake in Jiangsu Province, China

机译：江苏省淮河流域和太湖全氟烷基酸（包括全氟辛烷磺酸异构体）的发生

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摘要

The spatial distribution of 10 perfluoroalkyl acids including linear and branched (six monotrifluoromethyl isomers) perfluorooctane sulfonate (PFOS) in surface water was investigated in Huai River Basin and Taihu Lake in Jiangsu Province, China. In the water samples from Huai River Basin, perfluorooctanoic acid (PFOA) and PFOS were the predominant compounds (mean 18 ng/L and 4.7 ng/L,respectively), while in samples from Taihu Lake, PFOA,perfluorohexanoic acid (PFHxA), and PFOS were the predominant compounds (mean 56 ng/L, 19 ng/L, and 15 ng/L, respectively). Branched PFOS (Br-PFOS) isomers accounting for 48.1% to 62.5% of total PFOS were enriched in all samples from Taihu Lake, compared to technical electrochemical fluorination (ECF) PFOS (Br-PFOS ～30.0%), while the similar phenomena were not found in samples from Huai River Basin (Br-PFOS 29.0-35.0%). Principal component analysis (PCA) on the percentages of the individual isomer showed that the first two components accounted for 78.4% and 15.3% of the overall observed data variance. Samples from Huai River Basin were grouped together with the ECF PFOS standard suggesting the profiles were similar, while samples from Taihu Lake were grouped by themselves, suggesting that isomer profiles in these samples were different from that of Huai River Basin.The obvious difference in isomer profiles probably results from the different environmental behaviors of PFOS isomers and/or unknown sources (PFOS or PFOS precursors).
机译：在江苏省淮河流域和太湖地区，研究了地表水中10种全氟烷基酸（包括直链和支链（六个单三氟甲基异构体）全氟辛烷磺酸盐（PFOS））的空间分布。在淮河流域的水样中，全氟辛酸（PFOA）和PFOS是主要化合物（分别为18 ng / L和4.7 ng / L），而在太湖，PFOA，全氟己酸（PFHxA）中，和PFOS是主要化合物（分别为56 ng / L，19 ng / L和15 ng / L）。太湖所有样品中富集支链全氟辛烷磺酸（Br-PFOS）的异构体占全氟辛烷磺酸的48.1％至62.5％，相比之下，技术电化学氟化（ECF）全氟辛烷磺酸（Br-PFOS〜30.0％）具有相似的现象。在淮河流域的样品中未发现（Br-PFOS 29.0-35.0％）。主成分分析（PCA）对单个异构体的百分比显示，前两个成分分别占整体观察到的数据差异的78.4％和15.3％。淮河流域的样品与ECF PFOS标准归为一类，表明其剖面相似，而太湖样品则由其自身分组，这表明这些样品的异构体与淮河流域不同。概况可能是由于PFOS异构体和/或未知来源（PFOS或PFOS前体）的不同环境行为造成的。

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  • 来源
    《Environmental Science & Technology》 |2013年第2期|710-717|共8页
  • 作者

    Nanyang Yu; Wei Shi; Beibei Zhang; Guanyong Su; Jianfang Feng; Xiaowei Zhang; Si Wei; Hongxia Yu;

  • 作者单位

    State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, People's Republic of China;

    State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, People's Republic of China;

    State Environmental Protection Key Laboratory of Monitoring and Analysis for Organic Pollutants in Surface Water, Jiangsu Provincial Environmental Monitoring Center, Nanjing, People's Republic of China;

    State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, People's Republic of China;

    State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, People's Republic of China;

    State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, People's Republic of China;

    State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, People's Republic of China;

    State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, People's Republic of China;

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