PH-电位法测定多元配合物稳定常数的计算程序

A Computer Program for Calculating Stability Constants of Polynary Complexes from PH-Potentiometric Measurements

本文扩展了应用于测定二元配合物稳定常数的 TITFIT 程序,使之适用于形成多元配合物的平衡体系。通常滴定曲线的函数误差(滴定 NaOH 的总体积 ml)σ_(ml)<0.5%。适合曲线的最好参数与文献值列于表,我们的结果与文献上的相符较好。

We have developed a computer program TITFIT which was used to calculating stabili-ty constants of binary complexes.The developed program can be applied to the equilibriumsystem containing polynary complexes.In general we can fit titration curves with the errorlower than 0.5% of the total volume of the titrant.The best parameters used for fitting,together with those published in the literature,are given in table 1.These results coin-cide with those already published in the literatures