title: Studies on the application of Fe-Zr mixed hydrous oxide membranes in ion-selective potentiometry.
abstract: A solid membrane electrode selective to chloride ions has been prepared from Fe-Zr mixed hydrous oxide (with iron as a major constituent) with polystyrene as binder. Although the response of the electrode is non-Nernstian it can be utilized to estimate chloride in the concentration range 10(-4)-10(-1)M. The potentials generated across the membrane are reproducible within +/-0.2 mV and the response time is a few seconds. The standard deviation of the potential measurements is 0.4 mV at the 0.1M level. The useful pH range is 4-7 and the electrode can also be used in partially non-aqueous systems. The electrode exhibits fairly good selectivity for chloride.
authors.affiliation: Department of Chemistry, University of Roorkee, Roorkee-247667, India.
authors.forename: S K
authors.initials: SK
authors.lastname: Srivastava
authors.forename: C K
authors.initials: CK
authors.lastname: Jain