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

Autores: Shaidarova L.¹, Chelnokova I.¹, Gafiatova I.¹, Gedmina A.¹, Budnikov G.¹
Afiliações:
1. Butlerov Institute of Chemistry, Kazan Federal University
Edição: Volume 78, Nº 3 (2023)
Páginas: 253-259
Seção: 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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Resumo

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.

Palavras-chave

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

Bibliografia

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