【摘要】 本文提出的方法是,根据一定的络合平衡和物料平衡,将间接极谱和线性回归应用于络合滴定,旨在扩大络合滴定的应用范围.文中对测定误差作了分析和计算,探讨了滴定点及权重选择问题.测定了Co²⁺、Ni²⁺、Mg²⁺、Zn²⁺,精密度和准确度都令人满意.更多还原

【Abstract】 Based on related complex equilibria and material balances, a complexometric titra-tion in combination with indirect polarography and linear regression is proposed to widen the application range of complexometric titration. The error problem is studied by means of computation. Selection of determination points and weight factors is discussed. The method has been applied to the determination of Co2+ ,Ni2+ ,Mg2+ and Zn2+ with RSD of 0. 11%-0. 32%更多还原