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首页> 外文期刊>Environmental Science & Technology >Triple Domain in Situ Sorption Modeling of Organochlorine Pesticides, Polychlorobiphenyls, Polyaromatic Hydrocarbons, Polychlorinated Dibenzo-p-Dioxins, and Polychlorinated Dibenzofurans in Aquatic Sediments
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Triple Domain in Situ Sorption Modeling of Organochlorine Pesticides, Polychlorobiphenyls, Polyaromatic Hydrocarbons, Polychlorinated Dibenzo-p-Dioxins, and Polychlorinated Dibenzofurans in Aquatic Sediments

机译：水域沉积物中有机氯农药，多氯联苯，多芳烃，多氯二苯并对二恶英和多氯二苯并呋喃的三重原位吸附建模

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摘要

Here we analyze the potential of black carbon (BCI and oil-inclusive models to explain in situ sorption of 1,1-dichloro-2,2-bis(p-chlorophenyl)ethylene (DDE), 1,1-dichloro-2,2-bis(p-chlorophenyl)ethane (DDD), organochlorine pesticides (OCP), polychlorobiphenyls (PCB), polyaromatic hydrocarbons (PAH), polychlorinated dibenzo-p-dioxins (PCDD), and polychlorinated dibenzofurans (PCDF) to harbor sediments. Such models are important to understand bioavailability and mobility limitations of these chemicals in the aquatic environment Separate BC- or oil-inclusive models have been described before. However, it is unclearwhether oil could dominate in situ sorption in sediments that also contain BC, and whether the relative importance of phases would differ for different compounds. A BC- and oil-inclusive model was evaluated against chemical data and measured sediment characteristics. Parameter uncertainty was assessed using Monte Carlo simulations. Fitted model parameters were consistent with literature data and were satisfactory from a statistical as well as a chemical perspective. Sorption to oil was strong, proportional to octanol-water partitioning (Log K_(ow)) and of similar magnitude for OCP, PCB, PCDD, and PCDF. For PAH a single oil sorption coefficient was found. Oil dominated sorption only for PCBs, at oil levels above 50-250 mg oil/kg sediment BC dominated sorption of most other compounds, especially high molecular PAHs, PCDD, and PCDFs.
机译：在这里，我们分析了黑碳的潜力（BCI和含油模型）来解释1,1-二氯-2,2-双（对氯苯基）乙烯（DDE），1,1-二氯-2， 2-双（对氯苯基）乙烷（DDD），有机氯农药（OCP），多氯联苯（PCB），聚芳烃（PAH），多氯二苯并-对-二恶英（PCDD）和多氯二苯并呋喃（PCDF）来掩盖沉积物。这样的模型对于理解这些化学物质在水生环境中的生物利用度和迁移率限制很重要，之前已经描述了单独的含BC或含油模型，但是尚不清楚油是否可以在也含有BC的沉积物中原位吸附占主导地位，以及是否不同化合物的相的相对重要性会有所不同，用化学数据和测得的沉积物特征评估了含BC和油的模型，使用蒙特卡洛模拟评估了参数的不确定性，拟合的模型参数与数据，从统计和化学角度来看均令人满意。对石油的吸附很强，与辛醇-水分配成正比（Log K_（ow）），并且对于OCP，PCB，PCDD和PCDF的吸附程度相似。对于PAH，发现单一的油吸附系数。仅在多于50-250 mg油/ kg沉积物的油位下，油对PCB的吸附才占主导地位BC对大多数其他化合物（尤其是高分子PAH，PCDD和PCDF）的吸附占主导地位。

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  • 来源
    《Environmental Science & Technology》 |2009年第23期|8847-8853|共7页
  • 作者

    A. A. KOELMANS; K. KAAG; A. SNEEKES; E. T. H. M. PEETERS;

  • 作者单位

    Wageningen IMARES, P.O. Box 57, 1780 AB Den Helder, The Netherlands, and Aquatic Ecology Water Quality Management Group, Wageningen University, P.O. Box 47, 6700 AA Wageningen, The Netherlands;

    Wageningen IMARES, P.O. Box 57, 1780 AB Den Helder, The Netherlands, and Aquatic Ecology;

    Wageningen IMARES, P.O. Box 57, 1780 AB Den Helder, The Netherlands, and Aquatic Ecology;

    Water Quality Management Group, Wageningen University, P.O. Box 47, 6700 AA Wageningen, The Netherlands;

  • 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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