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首页> 外文期刊>Environmental Science & Technology >Concentrations, Distribution, and Persistence of Fluorotelomer Alcohols in Sludge-Applied Soils near Decatur, Alabama, USA
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Concentrations, Distribution, and Persistence of Fluorotelomer Alcohols in Sludge-Applied Soils near Decatur, Alabama, USA

机译：美国阿拉巴马州迪凯特附近污泥施肥土壤中含氟调聚物的浓度，分布和持久性

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摘要

Soil samples were collected for fluorotelomer alcohol (FTOHI analyses from six fields to which sludge had been applied and one "background" field that had not received sludge. Ten analytes in soil extracts were quantified using GC/MS. Sludge-applied fields had surface soil FTOH concentrations exceeding levels found in the background field. For 8:2nFT0H, which can degrade to perfluorooctanoic acid, impacted surface-soils ranged from 5 to 73 ng/g dry weight clearly exceeding the background field in which 8:2nFT0H was not detected. The highest [FTOH] generally was 10:2nFTOH, which had concentrations of <5.6 to 166 ng/g. For the first time, we document the persistence of straight-chained primary FTOHs (n-FTOHs) and branch-chained secondary FTOHs (sec-FTOHs), which are transformation products of n-FTOHs, in field soils for at least five years after sludge application. Ratios of sec-FTOHs to n-FTOHs were highest for 7:2sFT0H/8:2nFT0H |~50%) and decreased with increasing chain length to a minimum for the longest-chained analytes, 13:2sFT0H/14:2nFT0H (～10%). Disappearance half-lives for FTOHs, calculated with these data, ranged from 0.85 to 1.8 years. These analytical results show that the practice of sludge application to land is a pathway for the introduction of FTOHs and, accordingly, their transformation products, perfluorocarboxylic acids, into the environment
机译：收集土壤样品中的氟代端粒醇（FTOHI分析来自六个已施用污泥的田地和一个未接受污泥的“背景”田地。使用GC / MS对土壤提取物中的十种分析物进行了定量分析。 FTOH的浓度超过了本底领域的水平，对于8：2nFT0H可以降解为全氟辛酸，受影响的表面土壤的干重范围为5至73 ng / g干重，明显超过未检测到8：2nFT0H的本底领域。最高[FTOH]通常是10：2nFTOH，其浓度在<5.6至166 ng / g之间。我们首次记录了直链一级FTOH（n-FTOH）和支链二级FTOH（ sec-FTOHs是n-FTOHs的转化产物，在污泥施用后至少五年在田间土壤中。sec-FTOHs与n-FTOHs的比例最高为7：2sFT0H / 8：2nFT0H |〜50％）并随着链长的增加而减小链最长的分析物的最大浓度为13：2sFT0H / 14：2nFT0H（〜10％）。根据这些数据计算，FTOH的消失半衰期为0.85至1.8年。这些分析结果表明，向土地上施用污泥的做法是将FTOH及其相应的转化产物全氟羧酸引入环境的途径

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  • 来源
    《Environmental Science & Technology》 |2010年第22期|p.8397-8402|共6页
  • 作者

    HOON YOO; JOHN W. WASHINGTON; I. JACKSON ELLINGTON; THOMAS M. JENKINS; MICHAEL P. NEILL;

  • 作者单位

    National Research Council (NRC),960 College Station Road, Athens, Georgia 30605, United States,Ecosystems Research Division, National Exposure Research Laboratory, Office of Research and Development, Environmental Protection Agency,960 College Station Road, Athens, Georgia 30605, United States;

    Ecosystems Research Division, National Exposure Research Laboratory, Office of Research and Development, Environmental Protection Agency,960 College Station Road, Athens, Georgia 30605, United States;

    National Research Council (NRC),960 College Station Road, Athens, Georgia 30605, United States;

    Ecosystems Research Division, National Exposure Research Laboratory, Office of Research and Development, Environmental Protection Agency,960 College Station Road, Athens, Georgia 30605, United States,Senior Service America (SSA),980 College Station Road,Athens, Georgia 30605, United States;

    Region TV, Environmental Protection Agency, 980 College Station Road,Athens, Georgia 30605, United States;

  • 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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