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

Preparation and Properties of Membrane Cesium Ion-Selective Electrode

A. Hudák, M. Mamczák, A. Hanudeľ, and P. Meľuch

Department of Physical and Analytical Chemistry, Faculty of Natural Sciences, P. J. Šafárik University, CS-041 67 Košice

Abstract: Electrochemical properties of heterogeneous poly(vinyl chloride) membrane containing electrically active caesium cobalt nitrite (Cs₃Co(NO₂)₆.2H₂O) and dibutyl phthalate as plasticizer were studied. Slope of the ionic function of the ion-selective electrode made of this membrane was 40-43 mV/pCs. Dependence of EMV on the concentration of caesium ions was found to be linear in the 5 X 10^-2 to 10^-4 mol dm^-3 range. Apparent potentiometric coefficients of selectivity for cations Li⁺, Na⁺, K⁺, Rb⁺, NH⁴⁺, Ag⁺, Mg²⁺, Ca²⁺, Co²⁺, Ni²⁺, and Fe³⁺ were estimated by the separate solutions method. The pH of solutions within 4.5 and 9.5 did not influence the electrode response.

Full paper in Portable Document Format: 462a88.pdf

Chemical Papers 46 (2) 88–90 (1992)