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首页> 外文期刊>Environmental Science & Technology >Isomer Profiles of Perfluoroalkyl Substances in Water and Soil Surrounding a Chinese Fluorochemical Manufacturing Park
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Isomer Profiles of Perfluoroalkyl Substances in Water and Soil Surrounding a Chinese Fluorochemical Manufacturing Park

机译：中国氟化工生产基地周围水和土壤中全氟烷基物质的异构体分布

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Despite that China is the largest global manufacturer of perfluoroalkyl substances (PFASs), the manufacturing methods and isomer purity of these chemicals are generally unknown. Here, sampling was conducted around a major fluorochemical manufacturing park in China in 2012, including soil and water collection inside the park, including from a wastewater treatment plant (WWTP), as well as in surrounding rivers and soil (～15 km radius). Perfluoroalkyl sulfonates (PFSAs) were lower than perfluoroalkyl carboxylates (PFCAs) in all samples, and short-chain (C_4-C_6) PFCAs were predominant. Perfluoroalkyl phosphonates and phosphate diesters were occasionally detected, but at low detection frequency. Branched isomers of perfluorobutanesulfonate (PFBS) are reported for the first time, accounting for 15-27% of total PFBS in water. An enrichment of isopropyl- PFOA (28%) was found in WWTP influent, suggesting its manufacturing primarily by isopropyl telomerization. More numerous branched isomers were observed for the longer C_9-C_(13) PFCAs (e.g., C_(12) PFCA had 16 branched isomers), including high proportions of one major branched isomer (likely isopropyl), possibly as impurities from isopropyl-PFOA manufacturing. Overall, short-chain perfluorinated acids were the predominant PFASs being released, but PFOA was still a major chemical in use at this site, primarily from isopropyl telomerization.
机译：尽管中国是全球最大的全氟烷基物质（PFAS）制造商，但这些化学物质的制造方法和异构体纯度普遍未知。在这里，2012年在中国一个主要的氟化物制造园区内进行了采样，包括园区内的土壤和水收集，包括废水处理厂（WWTP）以及周围的河流和土壤（半径约15 km）。在所有样品中，全氟烷基磺酸盐（PFSA）均低于全氟烷基羧酸盐（PFCA），而短链（C_4-C_6）PFCA占主导地位。有时会检测到全氟烷基膦酸酯和磷酸二酯，但检测频率较低。首次报道了全氟丁烷磺酸盐（PFBS）的支链异构体，占水中PFBS总量的15-27％。在污水处理厂进水中发现了异丙基-PFOA的富集（28％），表明其主要是通过异丙基端粒化来制造的。对于较长的C_9-C_（13）PFCA（例如C_（12）PFCA具有16个支链异构体），观察到更多的支链异构体，包括高比例的一种主要支链异构体（可能是异丙基），可能是异丙基-PFOA的杂质制造业。总体而言，短链全氟酸是释放的主要PFAS，但PFOA仍是该位点使用的主要化学品，主要来自异丙基端粒化。

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  • 来源
    《Environmental Science & Technology》 |2015年第8期|4946-4954|共9页
  • 作者

    Hangbiao Jin; Yifeng Zhang; Lingyan Zhu; Jonathan W. Martin;

  • 作者单位

    Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin, P. R. China,Division of Analytical and Environmental Toxicology, Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, Alberta AB T6G 2G3, Canada;

    Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin, P. R. China,Division of Analytical and Environmental Toxicology, Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, Alberta AB T6G 2G3, Canada;

    Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin, P. R. China;

    Division of Analytical and Environmental Toxicology, Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, Alberta AB T6G 2G3, Canada;

  • 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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