PVC- Based cerium phosphate membrane exhibiting selectivity for molybdate anions

 A PVC-based membrane containing cerium phosphate was developed. Unlikethe cerium phsophate itself that acts as a cation exchanger, the membrane exhibitedanion-exchange properties. Therefore, the utility of this compound as a sensory element fordetection of molybdate ions was pursued. The response of molybdate selective electrodebased on this membrane was perfectly linear in the concentration range 1. 98خ10-5 to 10-1M. Characteristics of this electrode such as electric resistance, stability and membranepreconditioning process, and regeneration of its sensitivity are reported.