ELECTROCHEMICAL DETERMINATION OF ACETAMINOPHEN AT THE SURFACE OF A GLASSY CARBON ELECTRODE MODIFIED WITH MULTI-WALLED CARBON NANOTUBE

A multi-walled carbon nanotubes (MWCNTs) film coated glassy carbon electrode (GCE) was fabricated, and the electrochemical behavior of acetaminophen (AAP) was studied in Britton-Robinson (BR) buffer (pH 7.0), using cyclic voltammetry (CV), square-wave voltammetry (SWV) and differential pulse voltamm...

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Autores principales:	GHOREISHI,SAYED MEHDI, BEHPOUR,MOHSEN, HAJISADEGHIAN,ELAHE, GOLESTANEH,MAHSHID
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2013
Materias:	Acetaminophen Carbon nanotubes Glassy carbon electrode Electrochemical determination
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072013000100002
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spelling	oai:scielo:S0717-970720130001000022014-09-09ELECTROCHEMICAL DETERMINATION OF ACETAMINOPHEN AT THE SURFACE OF A GLASSY CARBON ELECTRODE MODIFIED WITH MULTI-WALLED CARBON NANOTUBEGHOREISHI,SAYED MEHDIBEHPOUR,MOHSENHAJISADEGHIAN,ELAHEGOLESTANEH,MAHSHID Acetaminophen Carbon nanotubes Glassy carbon electrode Electrochemical determination A multi-walled carbon nanotubes (MWCNTs) film coated glassy carbon electrode (GCE) was fabricated, and the electrochemical behavior of acetaminophen (AAP) was studied in Britton-Robinson (BR) buffer (pH 7.0), using cyclic voltammetry (CV), square-wave voltammetry (SWV) and differential pulse voltammetry (DPV). Cyclic voltammograms of AAP showed enhanced redox responses for the MWCNT/GCE with respect to the bare GCE. The anodic peak potential shifted to less positive values by increasing the pH. The electrochemical oxidation of AAP at MWCNT/GCE was quasi-reversible and diffusion-controlled. Experimental parameters, such as pH, scan rate, SW frequency and step height, were optimized for AAP measurement. Under the optimum pH of 7.0 in 0.1 M BR buffer solution, the DPV anodic peak current showed a linear relation versus AAP concentration in the range of 7.9x10-7 to 3.4x10-4 M with a detection limit of 3.3x10-7 for DPV, and from 6.5x10-7 to 3.5x10-4 M for SWV with a detection limit of 2.1x10-7 (signal to noise = 3). Moreover, this method demonstrated good reproducibility (RSD = 1.3%, n = 10) and long-term stability. These have been applied to the determination of AAP in effervescent dosage samples.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.58 n.1 20132013-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072013000100002en10.4067/S0717-97072013000100002
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Acetaminophen Carbon nanotubes Glassy carbon electrode Electrochemical determination
spellingShingle	Acetaminophen Carbon nanotubes Glassy carbon electrode Electrochemical determination GHOREISHI,SAYED MEHDI BEHPOUR,MOHSEN HAJISADEGHIAN,ELAHE GOLESTANEH,MAHSHID ELECTROCHEMICAL DETERMINATION OF ACETAMINOPHEN AT THE SURFACE OF A GLASSY CARBON ELECTRODE MODIFIED WITH MULTI-WALLED CARBON NANOTUBE
description	A multi-walled carbon nanotubes (MWCNTs) film coated glassy carbon electrode (GCE) was fabricated, and the electrochemical behavior of acetaminophen (AAP) was studied in Britton-Robinson (BR) buffer (pH 7.0), using cyclic voltammetry (CV), square-wave voltammetry (SWV) and differential pulse voltammetry (DPV). Cyclic voltammograms of AAP showed enhanced redox responses for the MWCNT/GCE with respect to the bare GCE. The anodic peak potential shifted to less positive values by increasing the pH. The electrochemical oxidation of AAP at MWCNT/GCE was quasi-reversible and diffusion-controlled. Experimental parameters, such as pH, scan rate, SW frequency and step height, were optimized for AAP measurement. Under the optimum pH of 7.0 in 0.1 M BR buffer solution, the DPV anodic peak current showed a linear relation versus AAP concentration in the range of 7.9x10-7 to 3.4x10-4 M with a detection limit of 3.3x10-7 for DPV, and from 6.5x10-7 to 3.5x10-4 M for SWV with a detection limit of 2.1x10-7 (signal to noise = 3). Moreover, this method demonstrated good reproducibility (RSD = 1.3%, n = 10) and long-term stability. These have been applied to the determination of AAP in effervescent dosage samples.
author	GHOREISHI,SAYED MEHDI BEHPOUR,MOHSEN HAJISADEGHIAN,ELAHE GOLESTANEH,MAHSHID
author_facet	GHOREISHI,SAYED MEHDI BEHPOUR,MOHSEN HAJISADEGHIAN,ELAHE GOLESTANEH,MAHSHID
author_sort	GHOREISHI,SAYED MEHDI
title	ELECTROCHEMICAL DETERMINATION OF ACETAMINOPHEN AT THE SURFACE OF A GLASSY CARBON ELECTRODE MODIFIED WITH MULTI-WALLED CARBON NANOTUBE
title_short	ELECTROCHEMICAL DETERMINATION OF ACETAMINOPHEN AT THE SURFACE OF A GLASSY CARBON ELECTRODE MODIFIED WITH MULTI-WALLED CARBON NANOTUBE
title_full	ELECTROCHEMICAL DETERMINATION OF ACETAMINOPHEN AT THE SURFACE OF A GLASSY CARBON ELECTRODE MODIFIED WITH MULTI-WALLED CARBON NANOTUBE
title_fullStr	ELECTROCHEMICAL DETERMINATION OF ACETAMINOPHEN AT THE SURFACE OF A GLASSY CARBON ELECTRODE MODIFIED WITH MULTI-WALLED CARBON NANOTUBE
title_full_unstemmed	ELECTROCHEMICAL DETERMINATION OF ACETAMINOPHEN AT THE SURFACE OF A GLASSY CARBON ELECTRODE MODIFIED WITH MULTI-WALLED CARBON NANOTUBE
title_sort	electrochemical determination of acetaminophen at the surface of a glassy carbon electrode modified with multi-walled carbon nanotube
publisher	Sociedad Chilena de Química
publishDate	2013
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072013000100002
work_keys_str_mv	AT ghoreishisayedmehdi electrochemicaldeterminationofacetaminophenatthesurfaceofaglassycarbonelectrodemodifiedwithmultiwalledcarbonnanotube AT behpourmohsen electrochemicaldeterminationofacetaminophenatthesurfaceofaglassycarbonelectrodemodifiedwithmultiwalledcarbonnanotube AT hajisadeghianelahe electrochemicaldeterminationofacetaminophenatthesurfaceofaglassycarbonelectrodemodifiedwithmultiwalledcarbonnanotube AT golestanehmahshid electrochemicaldeterminationofacetaminophenatthesurfaceofaglassycarbonelectrodemodifiedwithmultiwalledcarbonnanotube
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ELECTROCHEMICAL DETERMINATION OF ACETAMINOPHEN AT THE SURFACE OF A GLASSY CARBON ELECTRODE MODIFIED WITH MULTI-WALLED CARBON NANOTUBE

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