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- Title
Descripción teórica del desempeño electroanalítico del material compuesto de oxihidróxido de vanadio con el colorante escuárico en la detección de la carfedona.
- Authors
Tkach, Volodymyr V.; Kushnir, Marta V.; Ivanushko, Yana G.; de Oliveira, Sílvio C.; Vaz dos Reis, Lucinda; Yagodynets, Petro I.; Kormosh, Zholt O.
- Abstract
Introduction: In this work, the electroanalytical behavor of the vanadium oxyhydroxide-squaraine dye composite for the carfedon detection is evaluated. The electroanalytical process includes the formation of two tetravalent vanadium forms, including vanadium dioxide and vanadyl-ion. Methods: A mechanism, capable to describe the sensor behavior, has been suggested, and the correspondent mathematical model has been developed and analyzed by means of the linear stability theory and bifurcation analysis. Results: The model analysis has proved that the linear dependence between the drug concentration and the concentration is firmly maintained in a wide topological parameter region. As for the oscillatory and monotonic instabilities, they may be realized, being caused by strong influences of the chemical and electrochemical stages on double electric layer capacitance. Conclusions: The vanadium oxyhydroxide composite with the squaraine dye may serve as an efficient electrode modifier for carfedone determination. The vanadium oxyhydroxide works as an active substance and the dye as a mediator.
- Subjects
ELECTRIC double layer; ELECTRIC capacity; STABILITY theory; BIFURCATION theory; VANADIUM dioxide; HYDROXIDES
- Publication
Revista Colombiana de Ciencias Químico-Farmacéuticas, 2022, Vol 51, Issue 1, p458
- ISSN
0034-7418
- Publication type
Article
- DOI
10.15446/rcciquifa.v51n1.102727