PVC-Based Cerium Phosphate Membrane Exhibiting Selectivity for Molybdate Anions

Khodakarami, Hassan; Ghourchian, Hedayat O.

doi:10.30492/ijcce.2000.9993

PVC-Based Cerium Phosphate Membrane Exhibiting Selectivity for Molybdate Anions

Document Type : Research Note

Authors

¹ Department of Chemistry, Faculty of Science, Shahid Beheshti University, P.O. Box 19395-4716, Tehran, I.R. IRAN

² Laboratory of Microanalysis, Institute of Biochemistry & Biophysics, University of Tehran, P.O. Box 13145-1384, Tehran, I.R. IRAN

10.30492/ijcce.2000.9993

Abstract

A PVC-based membrane containing cerium phosphate was developed. Unlike the cerium phosphate itself that acts as a cation exchanger, the membrane exhibited anion-exchange properties. Therefore, the utility of this compound as a sensory element for detection of molybdate ions was pursued. The response of molybdate selective electrode based on this membrane was perfectly linear in the concentration range 1.98´10^-5 to 10^-1 M. Characteristics of this electrode such as electric resistance, stability and membrane preconditioning process, and regeneration of its sensitivity are reported.

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