A new, efficient Calcium ion selective electrode has been prepared using acyclic polyether based ionophore. The prepared ionophore is characterized by UV, FT-IR, XRD. Electrochemical impedance spectroscopy (EIS) technique is also employed to study the electrochemical & surfacereactions. The sensor exhibits a near Nernstian response for Ca(II) ion over a concentration range of 1.0 X 10-4M to1.0 M. The proposed sensors revealed relatively good selectivity and high sensitivity for Ca(II) over a mono and divalent cations. It can be used with in the pH range of 3.42 to 6.24 . The effect of medium and the selectivity coefficient values was evaluated using fixed interference method found to give a better response. The influence of temperature on electrode potential was studied & it can be used in the determination of thermodynamic functions like G, H & S. It was also successfully used in the analysis of concentration of Calcium ion in various real samples.
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A. Vijayalakshmi; J. T. Selvi, "Calcium ion Selective Electrode Based on Acyclic Polyether Based Ionophore & its Analytical Application", Journal of Ultra Chemistry, Volume 13, Issue 5, Page Number 112-120, 2017Copy the following to cite this URL:
A. Vijayalakshmi; J. T. Selvi, "Calcium ion Selective Electrode Based on Acyclic Polyether Based Ionophore & its Analytical Application", Journal of Ultra Chemistry, Volume 13, Issue 5, Page Number 112-120, 2017Available from: http://www.journalofchemistry.org/paper/566/