Potentiometric Estimation of Metal Ions Using Membrane as Indicator Electrodes

Department of Applied Chemistry, University of Calcutta, Calcutta Manuscript received 9 June 1975; accepted 8 August 1975 Metal ions e.g., Ag+, Ba++, Ca++ and Mg++ present singly or in their mixture were estimated potentiometrically by an assembly of two membrane electrodes, one cationic and the other anionic. This method avoids the disturbance of reference electrodes due to adherence of precipitates on them, if a precipitation occurs during titration