THE THEORETICAL DESCRIPTION FOR POTENTIODYNAMIC CONSTANT-VOLTAGE HEAVY METAL MONITORING, BASED ON NAPHTHOQUINONE-BASED OR OVEROXIDIZED CONDUCTING POLYMER
2022
Tkach, Volodymyr Valentynovych | Kushnir, Marta | C. de Oliveira, Sílvio | G. Ivanushko, Yana | O. da Silva, Adriano | V. Luganska, Olga | V. Yeshchenko, Yulia | O. Omelianchyk, Lyudmyla | I. Gencheva, Viktoria | V. Kopiika, Vira | I. Yagodynets´, Petro | O. Kormosh, Zholt
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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