Studies on the Preparation and Analytical Applications of Various Metal Ion-Selective Membrane Electrodes Based on Polymeric, Inorganic and Composite Materials—A Review

Abstract

Ion-selective membrane electrodes commonly known as electrochemical sensors are important in view of the ability to make direct or indirect measurement of various metal ions. The fact is that the use of ion-selective electrodes for such type of measurements requires relatively inexpensive equipment, which makes ion-selective electrodes attractive to scientists in many disciplines. Thus, potentometric sensors can offer an inexpensive and convenient method for the analysis of heavy metal ions in solutions providing acceptable sensitivity and selectivity. For this purpose, many organic, inorganic, chelating, intercalating and composite materials were studied as electroactive materials for the preparation of ion-selective membrane electrodes. The present study provides a detailed review of literature for the fabrication, characterization and analytical applications of ion-selective membrane electrode based on different electro active components.

Keywords:

• Ion-selective electrode
• membrane
• potentiometry
• metal ions

Acknowledgments

The authors are grateful for the help rendered by Dr. Ali Momammad (Chairman) and Dr. Asif Ali khan (Reader), Department of Applied Chemistry, Z.H. College of Engineering and Technology, and to A.M.U. (Aligarh) for carrying out this work.