游离态金属络合物解离稳态动力学的数学模拟

在有配位体存在的条件下，利用阳极溶出伏安法测得的水相游离金属含量通常偏高，本研制根据电化学、化学动力学和迁移动力学的基本原理，建立了描述扩散层中金属络合物解离反应和不同形态物质迁移过程中的物理模型和相应的数学模型。

MODELING OF COMPLEX DISSOCIATION WITHIN DIFFUSION LAYER DURING FREE METAL DETERMINATION USING ASV TECHNIQUE

Presence of natural occurring organic ligands may result in overestimation of free metal content by ASV technique. A conceptual model was developed. Both dissociation of the metal-ligand complex and mass transfer of various species within the diffusion layer were included in the model. The physical model was transformed into a mathematical one and the analytical solution to the differential equation at steady state were derived . The results of the mathematical modeling agreeed with those from computer simulation. The dissociation of the complex was proved by the modeling to be the primary reason causing the overestimation of free metal content.