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首页> 外文期刊>RSC Advances >Sorption of atrazine, alachlor and trifluralin from water onto different geosorbents
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Sorption of atrazine, alachlor and trifluralin from water onto different geosorbents

机译：从水中吸附到亚唑嗪，甲甲和三螺旋蛋白到不同的土壤中

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摘要

The sorption behavior of the herbicides atrazine, alachlor and trifluralin on four sorbents (two modified organoclays, one model sediment, and one natural sediment) in three water matrices (synthetic water, natural groundwater and surface water) was investigated. The influence of the sorbent and water matrix characteristics was elucidated. All adsorption isotherms fitted well with the Freundlich model. Based on the K-d values, the organically modified bentonite and model sediment proved to be the most effective sorbents for the investigated herbicides. A linear correlation of K-d with the total organic carbon (TOC) concentration was found for trifluralin in the synthetic water matrix (c(o) = 0.01 mg L-1). In the case of higher trifluralin concentration and for other tested herbicides at all concentrations the influence of both the sorbent organic matter quality and possible interactions with the mineral phase was indicated. Furthermore, the results showed different influence of the type and the content of dissolved organic carbon (DOC) in the water phase on the sorption of all the herbicides, depending on the herbicide concentration and the sorbent applied. It was confirmed that the comparison of sorbent efficiency should be done in native matrix since sorption coefficients vary depending on pollutant concentration, DOC concentration and DOC fraction. This finding is considered to be important for remediation of contaminated sites.
机译：研究了除草剂，甲醛素对三种水基质（合成水，天然地下水和地表水）的四种吸附剂（两种改性有机粘土，一个模型沉积物和一个天然沉积物）的吸附行为。阐明了吸附剂和水基质特性的影响。所有吸附等温线都与Freundlich模型合理。基于K-D值，有机改性的膨润土和模型沉积物被证明是研究除草剂最有效的吸附剂。在合成水基质中的Trifluralin（C（O）= 0.01mg L-1）中发现K-D与总有机碳（TOC）浓度的线性相关性。在较高的Trifluralin浓度和用于所有浓度的其他测试除草剂的情况下，表明了吸附剂有机物质质量和可能与矿物相的相互作用的影响。此外，取决于除草剂浓度和施加的吸附剂，结果表明，溶解有机碳（DOC）在水相中的溶解有机碳（DOC）的含量的影响不同。证实吸附剂效率的比较应在天然基质中进行，因为吸附系数根据污染物浓度，DOC浓度和DOC部分而变化。这种发现被认为对修复受污染的地点是重要的。

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  • 来源
    《RSC Advances》 |2015年第11期|共12页
  • 作者

    Leovac Anita; Vasyukova Ekaterina; Ivancev-Tumbas Ivana; Uhl Wolfgang; Kragulj Marijana; Trickovic Jelena; Kerkez Durda; Dalmacija Bozo;

  • 作者单位

    Univ Novi Sad Fac Sci Dept Chem Biochem &

    Environm Protect Novi Sad 21000 Serbia;

    Tech Univ Dresden Fac Environm Sci Inst Urban Water Management Chair Water Supply Engn D-01062 Dresden Germany;

    Univ Novi Sad Fac Sci Dept Chem Biochem &

    Environm Protect Novi Sad 21000 Serbia;

    Tech Univ Dresden Fac Environm Sci Inst Urban Water Management Chair Water Supply Engn D-01062 Dresden Germany;

    Univ Novi Sad Fac Sci Dept Chem Biochem &

    Environm Protect Novi Sad 21000 Serbia;

    Univ Novi Sad Fac Sci Dept Chem Biochem &

    Environm Protect Novi Sad 21000 Serbia;

    Univ Novi Sad Fac Sci Dept Chem Biochem &

    Environm Protect Novi Sad 21000 Serbia;

    Univ Novi Sad Fac Sci Dept Chem Biochem &

    Environm Protect Novi Sad 21000 Serbia;

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  • 正文语种 eng
  • 中图分类 化学;
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