摘要
在应用一级动力学方程来拟合土壤离子吸附动力学数据时，其关键是确定准确的平衡吸附量N∞的值，错误的或不符合方程本身在数学上要求的N∞的值，均会使拟合结果得出错误的结论。本文从理论上对化学机制与扩散机制的一级动力学方程进行了分析，提出了确定N∞值的方法，并在离子扩散与交换的动力学实验中得到了验证。
In the use of first-order kinetic equation to fit the kinetic data of ion adsorption, the crux is how to determine the value of N (the adsorbed quantity at equilibrium).Both ermneous N∞ value and unsuited N∞ value to the mathemahcal equation would lead to a wrong conclusion. In thes work, based on a theoretical analysis of the first-order kinetic equation of chemical adsorption mechanism and physical diffusion mechenism, a way to determine the value of N∞ was advanced and verified by the ion diffusion and ion adsorption experiments.
出处
《土壤学报》
CAS
CSCD
北大核心
1997年第4期353-358,共6页
Acta Pedologica Sinica
关键词
一级动力学
平衡吸附量
离子扩散
离子交换
土壤
Ion adsorption, First-order kinetics, Adsorbed quantity at equilibritum
