Elizalde M P, Aparicio J L
Departmento de Quimica Analítica, Universidad dei País Vasco, Apartado 644, 48080 Bilbao, Spain.
Talanta. 1995 Mar;42(3):395-400. doi: 10.1016/0039-9140(95)01422-8.
The adequation of the current theories for calculating activity coefficients has been studied for a series of ionic equilibria in analytical chemistry: the water ionic product as well as two reactions of complex formation and oxidation-reduction. In all the cases, the specific interaction theory (SIT) has proved to be adequate and simple to apply in a restricted interval (0.5-3M), whereas Pitzer's theory is outstanding for its high precision in reproducing experimental behaviour and to correlate values of equilibrium constants for different conditions and media.
针对分析化学中的一系列离子平衡，研究了当前计算活度系数理论的适用性：水的离子积以及两个络合形成反应和氧化还原反应。在所有情况下，特定相互作用理论（SIT）已被证明在有限区间（0.5 - 3M）内适用且易于应用，而皮兹理论在再现实验行为以及关联不同条件和介质下的平衡常数方面具有高精度，表现出色。
