Modellberechnung der EMK und der Ionenselektivität von Membranelektroden‐Messketten

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Abstract
Based upon a set of clearly specified assumptions, a universal integral equation is derived which describes the steady‐state EMF of an electrochemical cell containing any type of ion‐selective membrane electrode. The various modes of delineating the phenomenon ion‐selectivity by an explicit function are shown. For all types of analytically important ion‐sensitive electrodes, the selectivity between monovalent cations and anions, respectively, can be neatly and comprehensively rationalized. These theoretically derivable expressions are compiled.