Clay Based Ionophore in PVC Membrane for their Application in Ion-Selective Electrodes

Abstract

ISEs possess several advantages, such as high speed, ease of preparation, simple instrumentation, fast response time, wide concentration range, good selectivity and economically affordable. ISE based electrochemical sensors are useful in analysis of food products, drinking water, beverages, fertilizers, soil industrial effluents etc. Generally sensors are based on electroactive materials and provide a rapid and convenient means for quantitative estimation of anions and cations in biological and industrial samples. The aim of present work is to synthesize modified clay with heteropoly acids. These modified clays may have significant electrochemical activity in Ion selective electrodes. These clays can be employed as ionophore to develop chemical sensors for their application as sensors and in potentiometric titrations as indicator electrode.