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A Voltammetric Sensor Based on MgFe 2 O 4 Decorated on Reduced Graphene Oxide‐modified Electrode for Sensitive and Simultaneous Determination of Catechol and Hydroquinone
Author(s) -
Ognjanović Miloš,
Stanković Dalibor M.,
Fabián Martin,
Vukadinović Aleksandar,
Prijović Željko,
Dojčinović Biljana,
Antić Bratislav
Publication year - 2018
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.201800357
Subject(s) - hydroquinone , catechol , ascorbic acid , graphene , oxide , differential pulse voltammetry , electrode , detection limit , inorganic chemistry , chemistry , cyclic voltammetry , buffer solution , materials science , nuclear chemistry , electrochemistry , organic chemistry , chromatography , nanotechnology , food science
In this work facile one step synthesis of magnesium ferrite (MgFe 2 O 4 ) nanoparticles decorated on reduced graphene oxide (MgFe@RGO) using a microwave assisted hydrothermal procedure is reported. The synthesized material was characterized with help of several techniques and applied for the modification of glassy carbon electrode. Such prepared electrode was utilized for successive simultaneous detection of structurally similar compounds, 1,2‐ and 1,4‐dihydroxibenzenes (catechol (CC) and hydroquinone (HQ)), using differential pulse voltammetry technique. It was found that oxidation current increases linearly with the concentrations of both investigated compounds. Detection limits for both species are ≤0.31 μM. The best analytical response in the presence of both CC and HQ, taking into account peak shape and peak current, was obtained at pH 5.6 utilizing acetate buffer solution. The often‐presented species in the surface waters as well as gallic acid and caffeine do not interfere with determination of CC and HQ, while ascorbic acid shows high interference. The method is successfully applied for detection of catechol and hydroquinone in real samples analyses.