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首页> 外文期刊>Environmental Science & Technology >Influences of Chemical Properties, Soil Properties, and Solution pH on Soil-Water Partitioning Coefficients of Per- and Polyfluoroalkyl Substances (PFASs)
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Influences of Chemical Properties, Soil Properties, and Solution pH on Soil-Water Partitioning Coefficients of Per- and Polyfluoroalkyl Substances (PFASs)

机译：化学性质，土壤性质和溶液pH对多氟烷基物质土壤 - 水分配系数的影响（PFASS）

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摘要

The aim of this study was to assess the soil-water partitioning behavior of a wider range of per- and polyfluoroalkyl substances (PFASs) onto soils covering diverse soil properties. The PFASs studied include perfluoroalkyl carboxylates (PFCAs), perfluoroalkane sulfonates (PFSAs), fluorotelomer sulfonates (FTSs), nonionic perfluoroalkane sulfona-mides (FASAs), cyclic PFAS (PFEtCHxS), per- and polyfluoroalkyl ether acids (GenX, ADONA, 9Cl-PF3ONS), and three aqueous film-forming foam (AFFF)-related zwitterionic PFASs (AmPr-FHxSA, TAmPr-FHxSA, 6:2 FTSA-PrB). Soil-water partitioning coefficients (log K_d values) of the PFASs ranged from less than zero to approximately three, were chain-length-dependent, and were significantly linearly related to molecular weight (MW) for PFASs with MW ＞ 350 g/mol (R~2 = 0.94, p ＜ 0.0001). Across all soils, the K_d values of all short-chain PFASs (≤5 -CF2- moieties) were similar and varied less (＜0.5 log units) compared to long-chain PFASs (＞0.5 to 1.5 log units) and zwitterions AmPr- and TAmPr-FHxSA (～1.5 to 2 log units). Multiple soil properties described sorption of PFASs better than any single property. The effects of soil properties on sorption were different for anionic, nonionic, and zwitterionic PFASs. Solution pH could change both PFAS speciation and soil chemistry affecting surface complexation and electrostatic processes. The K_d values of all PFASs increased when solution pH decreased from approximately eight to three. Short-chain PFASs were less sensitive to solution pH than long-chain PFASs. The results indicate the complex interactions of PFASs with soil surfaces and the need to consider both PFAS type and soil properties to describe mobility in the environment.
机译：本研究的目的是评估覆盖各种土壤性质的土壤中更广泛的较宽范围和多氟烷基物质（PFASS）的土壤水分分配行为。研究包括全氟烷基羧酸酯（PFCAS），全氟烷烃磺酸盐（PFSAS），氟丙二醇磺酸盐（FTSS），非离子全氟烷烃磺化酶 - 中间（FASAS），环状PFAs（PFetchxS），苯甲酰基醚酸（Genx，Adona，9Cl- PF3ONs）和三种水性膜形成泡沫（AFFF） - 化的两性离子PFASS（AMPR-FHXSA，TAMPR-FHXSA，6：2 FTSA-PRB）。 PFASS的土壤 - 水分配系数（LOG K_D值）从小于零至约三个，依赖于链条长度，并且与MW> 350g / mol的PFASS进行显着线性相关（ R〜2 = 0.94，P <0.0001）。遍布所有土壤，与长链PFASS（> 0.5至1.5对数单位）和倍增时，所有短链PFASS（≤5-CF2-部分）的K_D值相比，所有短链PFASS（≤5-CF2-部分）的k_d值相似且变化较少（<0.5对数单位）和倍增和tampr-fhxsa（〜1.5到2个日志单位）。多种土壤属性描述了比任何单一性质更好的PFASS的吸附。对阴离子，非离子和两性离子粉剂的吸附对吸附的影响。溶液pH可以改变PFAS形态和土壤化学影响表面络合和静电过程。当溶液pH从大约8到三到三个降低时，所有PFASS的K_D值都会增加。短链PFASS对溶液pH敏感而不是长链PFASS。结果表明PFASS与土壤表面的复杂相互作用以及考虑PFAS类型和土壤性质的需要描述环境中的移动性。

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  • 来源
    《Environmental Science & Technology》 |2020年第24期|15883-15892|共10页
  • 作者

    Thi Minh Hong Nguyen; Jennifer Braeunig; Kristie Thompson; Jack Thompson; Shervin Kabiri; Divina A. Navarro; Rai S. Kookana; Charles Grimison; Craig M. Barnes; Christopher P. Higgins; Michael J. McLaughlin; Jochen F. Mueller;

  • 作者单位

    QAEHS Queensland Alliance for Environmental Health Sciences The University of Queensland Brisbane Queensland 4102 Australia;

    QAEHS Queensland Alliance for Environmental Health Sciences The University of Queensland Brisbane Queensland 4102 Australia;

    QAEHS Queensland Alliance for Environmental Health Sciences The University of Queensland Brisbane Queensland 4102 Australia;

    QAEHS Queensland Alliance for Environmental Health Sciences The University of Queensland Brisbane Queensland 4102 Australia;

    School of Agriculture Food and Wine The University of Adelaide Glen Osmond South Australia 5064 Australia;

    CSIRO The Commonwealth Scientific and Industrial Research Organisation Land and Water Glen Osmond South Australia 5064 Australia;

    CSIRO The Commonwealth Scientific and Industrial Research Organisation Land and Water Glen Osmond South Australia 5064 Australia;

    Ventia Pty Ltd. Chatswood New South Wales 2067 Australia;

    Airservices Australia Canberra Australian Capital Territory 2601 Australia;

    QAEHS Queensland Alliance for Environmental Health Sciences The University of Queensland Brisbane Qiteensland 4102 Australia Department of Civil and Environmental Engineering Colorado School of Mines Golden Colorado 80401 United States;

    School of Agriculture Food and Wine The University of Adelaide Glen Osmond South Australia 5064 Australia;

    QAEHS Queensland Alliance for Environmental Health Sciences The University of Queensland Brisbane Qiteensland 4102 Australia;

  • 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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