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Updated: Jun 28, 2026

Introduction to Solid Supported Membrane Based Electrophysiology
Published on: May 11, 2013
Novel sulfate ion-selective polymeric membrane electrode based on a derivative of pyrilium perchlorate
Mohammad Reza Ganjali1, Leila Naji, Tahereh Poursaberi
1Department of Chemistry, Tehran University, Tehran, Iran.
Abstract:
A sulfate ion-selective PVC membrane sensor based on 4-(4-bromophenyl)-2,6-diphenylpyrilium perchlorate (BDPP) as a novel sensing material is successfully developed. The electrode shows a good selectivity for sulfate ion with respect to common organic and inorganic anions. The sensor exhibits a good linear response with slope of -28.9+/-0.5 mV per decade over the concentration range of 1.0x10(-6)-1.0x10(-2) M, and a detection limit of 8.0x10(-7) M of SO(4)(2-) ions. The electrode response is independent of pH in the range of 4.0-9.0. The proposed sensor was applied as an indicator electrode in potentiometric titration of sulfate and barium ions, and to the determination of zinc in zinc sulfate tablets.
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