Using electrochemical impedance spectroscopy of salicylate anion selective electrode: simulation for behavior of electrode

Document Type: Research Paper

Authors

1 Yazd University, I. R. of Iran

2 Payame Noor University, I. R. Iran

3 Iranian Research Organization for Science & Technology (IROST),, I. R. Iran

4 Taft Branch, Islamic Azad University, I. R. Iran

Abstract

In this paper, the behavior of the salicylate anion-selective electrode was studied using the electrochemical impedance spectroscopy technique. Considering the diagram of the charge transfer resistance and -logarithm of the double layer capacitance versus -logarithm of the concentration, linear range concentration increased to 1.0×10^{-8}-1.0×10^{-1} M and 1.0×10^{-9}-1.0×10^{-1} M, respectively. Among the other characteristics of this study, it can be pointed out a wide pH range of 4.0-10.0. Then "one-impedance for one-concentration" method was used to measure the salicylate ion at the linear range of 1.0×10^{-8}-1.0×10^{-1} M. Finally, the impedance spectra of this electrode were simulated in which the obtained results of this simulation indicate proximity of experimental and simulation data.

Keywords