Calcium ion Selective Electrode Based on Acyclic Polyether Based lonophore & its Analytical Application
No Thumbnail Available
Date
2017
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
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"'M tol.O 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 AG, AH& AS. It was also successfully used in the analysis of concentration of Calcium ion in various real
samples.