Detection of epinephrine using a K2Fe4O7 modified glassy carbon electrode

Mingcheng Jiang; Decheng Zeng; Xinxin Zheng; Hongming Yuan

doi:10.1039/D4RA00242C

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Detection of epinephrine using a K₂Fe₄O₇ modified glassy carbon electrode†

Mingcheng Jiang,^a Decheng Zeng,^a Xinxin Zheng^a and Hongming Yuan

*^a

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* Corresponding authors

^a State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, PR China
E-mail: hmyuan@jlu.edu.cn

Abstract

Iron-based electrochemical catalysts used to modify electrodes for biosensing have received more attention from biosensor manufacturers because of their excellent biocompatibility and low cost. In this work, a fast-ion conductor potassium ferrite (K₂Fe₄O₇) modified glassy carbon electrode (GCE) was prepared for detecting epinephrine (EP) by electrochemical techniques. The obtained K₂Fe₄O₇/GCE electrode exhibited not only a wide linear range over EP concentration from 2 μM to 260 μM with a detection limit of 0.27 μM (S/N = 3) but also high selectivity toward EP in the presence of common interferents ascorbic acid (AA) and uric acid (UA), as well as good reproducibility and stability.

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Article information

DOI: https://doi.org/10.1039/D4RA00242C
Article type: Paper
Submitted: 10 Jan 2024
Accepted: 04 May 2024
First published: 13 May 2024
This article is Open Access

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RSC Adv., 2024,14, 15408-15412

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Detection of epinephrine using a K₂Fe₄O₇ modified glassy carbon electrode

M. Jiang, D. Zeng, X. Zheng and H. Yuan, RSC Adv., 2024, 14, 15408 DOI: 10.1039/D4RA00242C

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