Work

Woltamperometric determination of copheine on electrode modified by Nafion film and mixed valent iridium oxides in energy beverages

Year: 2024

Type: article

Abstract: . It was found that mixed valent iridium oxides electrodeposited on the surface of a glass-carbon electrode exhibit catalytic activity in the oxidation of caffeine. A more pronounced catalytic effect was obtained on the electrode modified with a composite based on a film of perfluorinated sulfonated polymer (Nafion) and mixed valent iridium oxides. A selective voltammetric method for the determination of caffeine was developed. A linear logarithmic dependence of current on caffeine concentration was observed in the range from 1×10–8 to 5×10–3 M. The developed method was used in the determination of caffeine in energy drinks.

Source: Journal of Analytical Chemistry

DOI: 10.31857/s0044450224060089

Authors: L. G. Shaydarova, I. A. Chelnokova, D. A. Koryakovtseva, D. A. Kirilenko, G. K. Budnikov

Institution: Kazan Federal University

Language: English

Topic: Electrochemical sensors and biosensors

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: bronze

OpenAlex ID: W4405680992

FWCI:

Cites: 5

Cited by:

Related to: 10