THE THEORETICAL DESCRIPTION FOR POTENTIODYNAMIC CONSTANT-VOLTAGE HEAVY METAL MONITORING, BASED ON NAPHTHOQUINONE-BASED OR OVEROXIDIZED CONDUCTING POLYMER

Authors

  • Volodymyr Valentynovych Tkach Chernivtsi National University
  • Marta Kushnir
  • Sílvio C. de Oliveira
  • Yana G. Ivanushko
  • Adriano O. da Silva
  • Olga V. Luganska
  • Yulia V. Yeshchenko
  • Lyudmyla O. Omelianchyk
  • Viktoria I. Gencheva
  • Vira V. Kopiika
  • Petro I. Yagodynets´
  • Zholt O. Kormosh

DOI:

https://doi.org/10.48422/IMIST.PRSM/ajees-v8i1.27096

Keywords:

heavy metal cations, electrochemical sensor, overoxidized polypyrrole, electrochemical oscillations, stable steady-state

Abstract

An interesting electrochemical potentiodynamic ampero- and potentiometric heavy metal concentration monitoring system, based on overoxidized polypyrrole, has been proposed. A model, describing the electrochemical behavior in the constant-voltage mode of this system has been developed and analyzed by means of linear stability theory and bifurcation analysis. It has been shown that the oscillatory behavior may occur more probably in this system than in the similar ones, due to the cyclical electrode surface impedance change. Nevertheless, this system may be efficient for heavy-metal concentration monitoring in vitro and in vivo. 

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Published

31-03-2022

Issue

Vol. 8 No. 1 (2022)

Section

Articles