Issue 1, 2012
From the journal:

Analytical Methods

Fabrication of a sensor for simultaneous determination of norepinephrine, acetaminophen and tryptophan using a modified carbon nanotube paste electrode

Mohammad Reza Akhgar,a   Hadi Beitollahi,b   Mohammad Salari,a   Hassan Karimi-Maleh*c  and  Hassan Zamanid  

* Corresponding authors

a Department of Chemistry, Faculty of Science, Islamic Azad University, Kerman Branch, Kerman, Iran

b Environment Department, Research Institute of Environmental Sciences, International Center for Science, High Technology & Environmental Sciences, Kerman, Iran

c Department of Chemistry, Majlesi Branch, Islamic Azad University, Isfahan, Iran

d Faculty of Science, University of Applied Science and Technology, Isfahan, Iran

Abstract

A carbon paste electrode (CPE) was modified by incorporation of carbon nanotubes and ferrocene (FC) and studied in pH 7.0 phosphate buffer solution (PBS) by cyclic voltammetry (CV). The modified electrode showed an excellent electrocatalytic effect on the oxidation of norepinephrine (NE). In PBS of pH 7.0, the oxidation current increased linearly with concentration of NE from 0.47 to 500.0 μmol L−1. The detection limit (3σ) obtained by differential pulse voltammetry (DPV) was 0.21 μmol L−1. Then the modified electrode was used to determine NE in an excess of acetaminophen (AC) and tryptophan (TRP) by DPV. Finally, this method was used for the determination of NE, AC and TRP in some real samples.

Graphical abstract: Fabrication of a sensor for simultaneous determination of norepinephrine, acetaminophen and tryptophan using a modified carbon nanotube paste electrode

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Article information

DOI
https://doi.org/10.1039/C1AY05503H
Article type
Paper
Submitted
14 Aug 2011
Accepted
13 Oct 2011
First published
28 Nov 2011

Anal. Methods, 2012,4, 259-264

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Fabrication of a sensor for simultaneous determination of norepinephrine, acetaminophen and tryptophan using a modified carbon nanotube paste electrode

M. R. Akhgar, H. Beitollahi, M. Salari, H. Karimi-Maleh and H. Zamani, Anal. Methods, 2012, 4, 259 DOI: 10.1039/C1AY05503H

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