Department of Chemistry, Avinashilingam Deemed University for Women Coimbatore India

A heterogeneous precipitates have been as ion carriers for the preparation of Na (I) selective membrane sensor. The electrodes give nearnernstian responses in linear concentration range of 1M to 1x10^-2M with detection limits of the order of 10^-2M . The stable potentiometric signals are obtained with in a short time period of 3 minutes. The effect of pH, and the effect of medium have been studied found to give a better response. Selectively coefficient values (log K^pot_Na,M) have been evaluated using fixed interference method. The sensors have also been as an indicator electrode in commercially available products.