Determination of equilibrium constants of strong acidic ion exchange resins by potentiometric titrations

被引：5

作者：

Borge, G

Madariaga, JM

机构：

[1] Kimika Analitikoaren Departamentua, Euskal Herriko Unibertsitatea, UPV/EHU, 644 PK

来源：

TALANTA | 1997年 / 45卷 / 02期

关键词：

ion exchange equilibrium constants; potentiometry; ionic strength; methods of calculation;

D O I：

10.1016/S0039-9140(97)00158-6

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A new method for the determination of ion exchange equilibrium constants is developed. A technique based in the application of potentiometric titrations is used in the study of non selective strong acidic resins. Potentiometric titrations are carried out without constant ionic strength, so a mathematical treatment is developed in order to take into account the estimation of the activity coefficients and the liquid junction potentials. The ion exchange thermodynamic equilibrium constants for two resins: Dowex CM-15 and Dowex C650, between the proton form and the alkaline metals at 25 degrees C are given. (C) 1997 Elsevier Science B.V.

引用

页码：463 / 471

页数：9

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