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首页> 外文期刊>Environmental Science & Technology >Hydrophilic Divinylbenzene for Equilibrium Sorption of Emerging Organic Contaminants in Aquatic Matrices
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Hydrophilic Divinylbenzene for Equilibrium Sorption of Emerging Organic Contaminants in Aquatic Matrices

机译：亲水性二乙烯基苯平衡水基质中新兴有机污染物的吸附

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Hydrophilic divinylbenzene (DVB) (Bakerbond) has surfaced as a promising sorbent for active sampling of analytes from aqueous matrices over a very broad polarity range. Given this, hydrophilic DVB may likewise offer potential for passive sampling, if sorbent/water partitioning coefficients (K-sw) were to be available. In this work, static exposure batch experiments were performed to quantitatively study the equilibrium sorption of 131 environmentally relevant organic contaminants (P values ranging from -1.30 to 9.85) on hydrophilic DVB. The superior affinity of hydrophilic DVB, as compared to Oasis HLB, for compounds with a broad polarity range was confirmed by functional Fourier-transform infrared spectroscopy and Raman characterization, demonstrating the presence of carboxyl moieties. Concentration effects were studied by increasing compound concentrations in mixture experiments and resulted in the steroidal endocrine disrupting compounds in higher K-sw, while lower K-sw were obtained for the (alkyl)phenols, personal care products, pesticides, pharmaceuticals, and phthalates. Nevertheless, K-sw remained constant in the said design for equilibrium water concentrations at environmentally relevant seawater levels. An independent analysis of thermodynamic parameters (change in enthalpy, entropy, and Gibbs free energy) revealed the nature of the main partitioning processes. While polar (log P < 4) compounds were mainly served by physisorption, nonpolar (log P > 4) compounds also exhibited binding by multiple hydrogen bonding. In conclusion, this research facilitates the future application of hydrophilic DVB for active as well as passive sampling in the analysis of organic contaminants for monitoring purposes and for toxicity testing.
机译：亲水性二乙烯基苯（DVB）（Bakerbond）已成为一种很有希望的吸附剂，可用于在非常宽的极性范围内从水性基质中主动分析物的采样。鉴于此，如果要获得吸附剂/水分配系数（K-sw），则亲水性DVB同样可以为被动采样提供潜力。在这项工作中，进行了静态暴露批处理实验，以定量研究131种与环境相关的有机污染物（P值在-1.30到9.85之间）在亲水DVB上的平衡吸附。与Oasis HLB相比，亲水性DVB对极性范围较宽的化合物具有优异的亲和力，这是通过功能傅里叶变换红外光谱和拉曼表征得到证实的，这表明存在羧基部分。通过在混合物实验中增加化合物的浓度来研究浓度的影响，结果导致甾体内分泌干扰化合物的K-sw较高，而（烷基）酚，个人护理产品，农药，药物和邻苯二甲酸盐的K-sw较低。然而，在上述设计中，在与环境有关的海水水平下，平衡水浓度的K-sw保持恒定。热力学参数（焓，熵和吉布斯自由能的变化）的独立分析显示了主要分配过程的性质。极性（log P <4）化合物主要通过物理吸附作用，而非极性（log P> 4）化合物也通过多个氢键结合。总而言之，这项研究促进了亲水性DVB的未来应用，无论是主动采样还是被动采样，都可以用于分析有机污染物以进行监测和毒性测试。

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  • 来源
    《Environmental Science & Technology》 |2019年第18期|10803-10812|共10页
  • 作者

    Huysman Steve; Vanryckeghem Francis; De Paepe Ellen; Smedes Foppe; Haughey Simon A.; Elliott Christopher T.; Demeestere Kristof; Vanhaecke Lynn;

  • 作者单位

    Univ Ghent LCA Dept Vet Publ Hlth & Food Safety Fac Vet Med B-9820 Merelbeke Belgium;

    Univ Ghent Res Grp Environm Organ Chem & Technol EnVOC Dept Green Chem & Technol Fac Biosci Engn B-9000 Ghent Belgium;

    Masaryk Univ Res Ctr Tox Cpds Environm Fac Sci Brno 60177 Czech Republic;

    Queens Univ Sch Biol Sci Inst Global Food Secur Belfast BT7 1NN Antrim North Ireland;

    Univ Ghent LCA Dept Vet Publ Hlth & Food Safety Fac Vet Med B-9820 Merelbeke Belgium|Queens Univ Sch Biol Sci Inst Global Food Secur Belfast BT7 1NN Antrim North Ireland;

  • 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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