ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Formation of complexes and ion-exchange equilibriums on a cation exchanger in mixed media

M. Šimek

Department of Analytical Chemistry, Faculty of Natural Sciences, J. E. Purkyně University, 611 37 Brno

Abstract: The ion-exchange equilibria of Cu(II), Zn(II), and Fe(III) cations between the ion-exchanger phase of a strongly acidic cation exchanger and the solutions of perchloric or hydrochloric acid in methanol, ethanol, and acetic acid have been investigated. In the system containing perchloric acid the distribution coefficients increase with decreasing permittivity of solution which is related to the increased interactions between the cations and the fixed ions of ion exchanger. In the mixed medium of hydrochloric acid some negatively charged complexes containing Cu(II), Zn(II), and Fe(III) cations are formed and then this competitive equilibrium considerably decreases the sorption of the above ions on cation exchanger.

Full paper in Portable Document Format: 285a633.pdf

Chemical Papers 28 (5) 633–637 (1974)