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Sorption of Highly Hydrophobic Organic Chemicals to Organic Matter Relevant for Fish Bioconcentration Studies

机译:高度疏水性有机化学物质对鱼类生物浓缩研究相关的有机物质的吸附

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摘要

With regard to a potential underestimation of bioconcentration factors (BCF) in flow-through fish tests, sorption of 11 highly hydrophobic organic chemicals (HOCs) (log K_(OW) 5.5-7.8) from different substance classes was systematically investigated for the first time in the presence of fish feed (FF) and filter residues (FR), the organic matter (OM) most relevant for fish bioconcentration studies. Sorption was investigated in batch-equilibrium experiments by solid-phase microextraction (SPME) resulting in partitioning coefficients of solid-water (K_d), total organic carbon-water (K_(TOC)), and dissolved organic carbon-water (K_(DOC)). Results prove a high affinity of HOCs for FF and FR supporting a significant impact on BCF studies and differing from sorption to Aldrich-humic acid (AHA) utilized as reference sorbent. Sorption is influenced by interactions between HOCs and OM characteristics. For FF, K_(DOC) values were higher than K_(TOC) values. Results help to assess the relevance of interaction of HOCs from different substance classes with OM relevant for BCF studies.
机译:关于流式鱼类测试中生物富集因子(BCF)的潜在低估,首次系统研究了不同物质类别对11种高疏水性有机化学品(HOC)(log K_(OW)5.5-7.8)的吸附在鱼饲料(FF)和滤渣(FR)的存在下,与鱼类生物富集研究最相关的有机物(OM)。通过固相微萃取(SPME)在批次平衡实验中研究了吸附,得出固水(K_d),总有机碳水(K_(TOC))和溶解的有机碳水(K_(DOC)的分配系数))。结果证明,HOC对FF和FR具有很高的亲和力,这对BCF研究具有重大影响,并且不同于用作参考吸附剂的Aldrich-腐植酸(AHA)的吸附。吸附受到HOC和OM特性之间相互作用的影响。对于FF,K_(DOC)值高于K_(TOC)值。结果有助于评估不同物质类别的HOC与BCF研究相关的OM相互作用的相关性。

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  • 来源
    《Environmental Science & Technology》 |2016年第15期|8316-8323|共8页
  • 作者单位

    Institute of Soil Science and Soil Conservation, Research Centre for BioSystems, Land Use and Nutrition (iFZ), Justus Liebig University Giessen, Heinrich-Buff-Ring 26-32, 35392 Giessen, Germany;

    Fraunhofer Institute for Molecular Biology and Applied Ecology (IME), Auf dem Aberg 1, 57392 Schmallenberg, Germany;

    Institute of Soil Science and Soil Conservation, Research Centre for BioSystems, Land Use and Nutrition (iFZ), Justus Liebig University Giessen, Heinrich-Buff-Ring 26-32, 35392 Giessen, Germany;

  • 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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  • 正文语种 eng
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