Thamarai Selvi, J2017-11-082017-11-082017319-8034https://ir.avinuty.ac.in/handle/avu/3611A new, elTicient Calcium ion selective electrode has been prepared using Vinyl acetic acid grafted PVC based ionophore. The influence of temperature on electrode potential was studied & it can be used in the determination of thermodynamic function like AQ AH & AS. The electrochemical impedance spectroscopy (EIS) technique is also employed to study the electrochemical & surface reactions. It was also successfully used in the analysis of concentration of Calcium ion in various real samples.