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在不同土壤浓度条件下进行了黄土对铜离子的等温吸持实验 (包括吸附与沉淀 ) .利用兰格缪尔 (Langmuir)等温式对实验结果进行拟合时发现 :黄土对铜离子的吸持结果在形式上仍可用传统的Langmuir等温式来描述 ,但式中的相关参数已经不再具有原来的物理意义 .本文分析了Langmuir等温式在黄土对铜离子吸持时的适用性 ,指出其参数变化与铜离子的吸附关系不大 ,而与沉淀密切相关 .
The isothermal adsorption experiments of loess with copper ions (including adsorption and precipitation) under different soil concentrations were carried out.When the Langmuir isotherm was used to fit the experimental results, it was found that the adsorption of copper ions by loess The results can still be described by the traditional Langmuir isotherm in terms of form, but the relevant parameters in the formula no longer have the original physical meaning.In this paper, the applicability of Langmuir isotherm in adsorption of copper ions by loess is analyzed, and its parameters The change is not related to the adsorption of copper ions, but is closely related to the precipitation.