配合物萃取平衡计算公式使用条件和一般解法

提出了配合物萃取平衡计算公式1gD=1gKe+n1gHL(0)]+npH和pH1/2。计算公式的使用条件分别为lgλMLn2+Σni=2(lgKl-lgKi)和lgλMLnΣni=2(lgKl-lgKi)。提出了应用范围更广的配合物萃取平衡计算公式为:lgD=lg(KeλbHL)/(βbKba)+(n-b)lgHL(0)]+(n-b)pH,式中b为水相中浓度最大配离子的级数。两个配合物体系被用于计算,其结果与计算机直接求解萃取平衡结果相符。

The Use Condition of Equation and General Equation For Extraction Equilibrium

The use conditions of equations calculating extraction equilibrium：1g D=1gKe＋n1gHL（0）]＋npH and pH1/2,were presented in this paper： lgλMLn〉2＋Σni=2（lgKl-lgKi）和lgλMLn〉Σni=2（lgKl-lgKi） .A more general equation for calculating extraction equilibrium was also provided lgD=lg（KeλbHL）/（βbKba）＋（n-b）lgHL（0）]＋（n-b）pH, where b is coordination number of coordination ion with maximum concentrauon on waler phase. ,he imaginary data of two coordination compounds were used for calculation, and their results agreed with these ones directly obtained by overall equilibrium.