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首页> 外文期刊>Environmental Science & Technology >Emissions, Transport, and Fate of Emerging Per- and Polyfluoroalkyl Substances from One of the Major Fluoropolymer Manufacturing Facilities in China
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Emissions, Transport, and Fate of Emerging Per- and Polyfluoroalkyl Substances from One of the Major Fluoropolymer Manufacturing Facilities in China

机译：来自中国主要含氟聚合物生产设施之一的新兴全氟和多氟烷基物质的排放，运输和结实

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摘要

Fluoropolymer manufacturing is a major historical source of perfluorooctanoic acid (PFOA) on a global scale, but little is known about the emissions, transport, and fate of emerging per- and polyfluoroalkyl substances (PFASs). Here, we performed a comprehensive spatial trend and interyear comparison of surface water and sediment samples from the Xiaoqing River, which receives water discharge from one of the major fluoropolymer manufacturing facilities in China. A suspect screening identified 42 chemical formulas, including the tetramer acid of hexafluoropropylene oxide (HFPO-TeA) and numerous tentatively detected isomers of C9-C14 per- or polyfluoroalkyl ether carboxylic acids (PFECAs). As revealed by the spatial trends and peak area-based sediment-water distribution coefficients, emerging PFASs with 3-9 perfluorinated carbons were transported unimpededly with the bulk water flow having no measurable degradation. Emerging PFASs with 9 perfluorinated carbons displayed more rapidly decreasing spatial trends than shorter chain homologues in surface water due to increasing sedimentation rates. The presence of HFPO oligomers, monoether PFECAs, monohydrogen-substituted perfluoroalkyl carboxylic acids (PFCAs) and monochlorine-substituted PFCAs could partly be explained by the active use of polymerization aids or the impurities therein. However, further research is encouraged to better characterize the emissions of low-molecular-weight PFASs from fluoropolymers throughout their life-cycle.
机译：在全球范围内，含氟聚合物的生产是全氟辛酸（PFOA）的主要历史来源，但对于新兴的全氟和多氟烷基物质（PFAS）的排放，运输和结局知之甚少。在这里，我们对小清河的地表水和沉积物样本进行了综合的空间趋势和年际比较，小清河从中国主要的含氟聚合物生产基地之一接收了水。可疑的筛选过程确定了42个化学式，包括六氟环氧丙烷的四聚酸（HFPO-TeA）和C9-C14过氟或多氟烷基醚羧酸（PFECA）的许多试探性异构体。正如空间趋势和基于峰面积的沉积物-水分配系数所揭示的那样，新兴的具有3-9个全氟化碳的PFAS可以不受阻碍地运输，而大部分水流都没有可测量的降解。与全氟化碳含量> 9的新兴PFAS相比，由于增加的沉降速率，其表面趋势的下降趋势要比地表水中较短的链同源物下降得更快。 HFPO低聚物，单醚PFECA，单氢取代的全氟烷基羧酸（PFCA）和单氯取代的PFCA的存在可以部分通过积极使用聚合助剂或其中的杂质来解释。但是，鼓励进行进一步的研究以更好地表征含氟聚合物在其整个生命周期中所排放的低分子量PFAS。

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  • 来源
    《Environmental Science & Technology》 |2018年第17期|9694-9703|共10页
  • 作者

    Song Xiaowei; Vestergren Robin; Shi Yali; Huang Jun; Cai Yaqi;

  • 作者单位

    Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Chem & Ecotoxicol, Beijing 100085, Peoples R China;

    IVL Swedish Environm Res Inst, Stockholm, Sweden;

    Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Chem & Ecotoxicol, Beijing 100085, Peoples R China;

    Tsinghua Univ, State Key Joint Lab Environm Simulat & Pollut Con, Beijing Key Lab Emerging Organ Contaminants Contr, Sch Environm, Beijing 100084, Peoples R China;

    Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Chem & Ecotoxicol, Beijing 100085, Peoples R China;

  • 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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