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首页> 外文会议>2010 International Conference on Multimedia Technology >Applicability of a Dual-Equilibrium Desorption Model to the Desorption of Organic Compounds from the Sediments in China Rivers
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Applicability of a Dual-Equilibrium Desorption Model to the Desorption of Organic Compounds from the Sediments in China Rivers

机译：双平衡解吸模型对中国河流沉积物中有机物解吸的适用性

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Soil contamination is an enormous problem in China and severely threatens environmental quality and food safety. Desorption of contaminants from soil is a critical process controlling the availability of soil contaminants and thus the risk associated with contaminated soil. All the currently adopted desorption models greatly simplify desorption by assuming that desorption is a simple reverse of adsorption. However, numerous studies have shown that desorption is indeed biphasic. A new dual-equilibrium desorption (DED) model to account for the biphasic desorption has been developed and tested using a wide range of laboratory data. In this paper, field data of major rivers in China were modeled with the DED isotherm and the linear isotherm. Results in the present study indicate that the DED model can more accurately quantify desorption of contaminants from soil and sediments, which proposed the application of the dual-equilibrium desorption model.
机译：在中国，土壤污染是一个巨大的问题，严重威胁着环境质量和食品安全。污染物从土壤中的解吸是控制土壤污染物的可用性并因此控制与污染土壤相关的风险的关键过程。当前所有采用的解吸模型都通过假定解吸是吸附的简单逆转极大地简化了解吸。但是，大量研究表明，解吸确实是两相的。已经开发了一种用于解释双相解吸的新的双平衡解吸（DED）模型，并使用了大量的实验室数据进行了测试。本文利用DED等温线和线性等温线对中国主要河流的野外数据进行了建模。本研究结果表明，DED模型可以更准确地定量分析土壤和沉积物中污染物的解吸，从而提出了双平衡解吸模型的应用。

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