Author/Authors :
Mazloum-Ardakani, M Department of Chemistry, Faculty of Science, Yazd University, Yazd , Kholghi, H Department of Chemistry, Faculty of Science, Yazd University, Yazd , Sheikh-Mohseni, M.A Department of Chemistry, Faculty of Science, Yazd University, Yazd , Benvidi, A Department of Chemistry, Faculty of Science, Yazd University, Yazd , Naeimi, H Department of Organic Chemistry, Faculty of Chemistry, University of Kashan, Kashan
Abstract :
In this paper, a nanostructured modified electrode was fabricated by
incorporating of 2,2′-[1,9-nonanediylbis(nitriloethylidyne)]-bishydroquinone
(NNH) as a newly synthesized modifier and TiO2
nanoparticles to the carbon paste (MTCPE) and then was used for the
electroanalysis of epinephrine (EP). The electrochemical studies were
carried out by using cyclic voltammetry, chronoamperometry and
differential pulse voltammetry (DPV) techniques. It has been found
that the oxidation of EP at the surface of this electrode occurs at a
potential about 235 mV less positive than that of an unmodified
carbon paste electrode. A dynamic range of 1.0–2000.0 μM, with a
detection limit of 0.37 μM for EP, was obtained using DPV. Also,
this modified electrode exhibits well separated oxidation peaks for
EP and acetaminophen (AC) using DPV.
Keywords :
Nanostructure , Epinephrine , Acetaminophen , Modified electrode , TiO2 nanoparticles
