A Carbon Paste Electrode Modified by Graphene Oxide/Fe3O4@SiO2/Ionic Liquid Nanocomposite for Voltammetric Determination of Acetaminophen in the Presence of Tyrosine


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Herein, we introduce a novel modification process for carbon paste electrode by magnetic core–shell nanocomposite of graphene oxide/Fe3O4@SiO2 and n-hexyl-3-methylimidazolium hexafluoro phosphate as ionic liquid. Electrochemical features of this modified carbon paste electrode and its performance evaluation in simultaneous detection of acetaminophen and tyrosine via voltammetric oxidation was investigated. Moreover, diagnostic techniques including cyclic voltammetry, square wave voltammetry and chronoamperometry were applied in order to study the electrochemical oxidation behavior of this sensor toward acetaminophen. According to square wave voltammetry results, linear dynamic range between 1.0 × 10–6–1.0 × 10–3 M was observed for acetaminophen. The function of modified electrode in real samples containing acetaminophen and tyrosine was satisfactory.

Sobre autores

Hadi Beitollahi

Environment Department, Institute of Science and High Technology and Environmental Sciences,
Graduate University of Advanced Technology

Autor responsável pela correspondência
Email: h.beitollahi@yahoo.com
Irã, Kerman

Fariba Garkani Nejad

Environment Department, Institute of Science and High Technology and Environmental Sciences,
Graduate University of Advanced Technology

Autor responsável pela correspondência
Email: f.garkani95@gmail.com
Irã, Kerman

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