Sequential Injection Amperometric Determination of Glucose in Saliva Using a Screen-Printed Electrode Modified with a Gold–Cobalt Binary System

L. G. Shaidarova; Шайдарова Л. Г.; I. A. Chelnokova; Челнокова И. А.; I. A. Gafiatova; Гафиатова И. А.; A. V. Gedmina; Гедмина А. В.; G. K. Budnikov; Будников Г. К.

doi:10.31857/S004445022303012X

Sequential Injection Amperometric Determination of Glucose in Saliva Using a Screen-Printed Electrode Modified with a Gold–Cobalt Binary System

Authors: Shaidarova L.G.¹, Chelnokova I.A.¹, Gafiatova I.A.¹, Gedmina A.V.¹, Budnikov G.K.¹
Affiliations:
1. Butlerov Institute of Chemistry, Kazan Federal University
Issue: Vol 78, No 3 (2023)
Pages: 253-259
Section: ОРИГИНАЛЬНЫЕ СТАТЬИ
URL: https://journals.rcsi.science/0044-4502/article/view/136013
DOI: https://doi.org/10.31857/S004445022303012X
EDN: https://elibrary.ru/FUUDHQ
ID: 136013

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Abstract

The catalytic activity of particles of gold, cobalt, and a gold–cobalt binary system electrodeposited on the surface of planar carbon electrodes was found in the oxidation of glucose in a neutral medium. The amperometric response of a screen-printed electrode modified with a gold–cobalt binary system was used as an analytical signal in the determination of glucose in a sequential injection system. The linear logarithmic dependence of current on the glucose concentration was observed in the range from 5 × 10–8 to 5 × 10–2 M. The use of a screen-printed electrode modified with a gold–cobalt binary system as an amperometric detector in a sequential injection system makes it possible to selectively determine glucose in saliva in the concentration range used for medical diagnosis.

Keywords

chemically modified electrodes, planar electrode, cobalt and gold particles, gold–cobalt binary, system, glucose electrooxidation, sequential injection analysis, amperometric detector

References

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