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导出了强吸附条件下静止溶液中吸附富集时对称球状电极上的吸附量及线性变势吸附伏安法中不可逆过程的电流方程式。结果指出,在所应用的条件下,球状电极曲率对吸附量及吸附电流的影响是不可忽略的因素。吸附量及吸附电流与吸附富集时间呈非简单的幂函数关系,但与被吸附物溶液中的浓度有线性关系。用悬汞电极以 Ni(Ⅱ)—丁二肟体系对方程进行了验证,理论与实验结果一致。
The equations of adsorption on the symmetrical spherical electrode and the irreversible process in the linear-variation sorption voltammetry are deduced under strong adsorption conditions. The results indicate that under the applied conditions, the influence of the curvature of the spherical electrode on the adsorption capacity and the adsorption current is not negligible. Adsorption capacity and adsorption current adsorption enrichment time was not a simple power function, but with the concentration of adsorbate solution has a linear relationship. The equation was verified by the hanging mercury electrode with Ni (Ⅱ) -butyloxime system. The theoretical and experimental results are in good agreement.