DEVELOPMENT OF A MODIFIED CARBON ELECTRODE WITH IONIC LIQUID AND ITS APPLICATION FOR ELECTROCATALYTIC OXIDATION AND VOLTAMMETRIC DETERMINATION OF LEVODOPA

A carbon paste electrode was modified with the ionic liquid 1-butyl-4-methylpyridinium hexafluoro phosphate and applied for the study of the electrocatalytic oxidation and voltammetric determination of the drug levodopa. The developed modified electrode was characterized using cyclic voltammetry and...

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Autores principales:	MONCADA,V, ÁLVAREZ-LUEJE,A
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2014
Materias:	Levodopa carbon paste ionic liquid modified electrodes Voltammetry
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072014000200026
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spelling	oai:scielo:S0717-970720140002000262014-11-05DEVELOPMENT OF A MODIFIED CARBON ELECTRODE WITH IONIC LIQUID AND ITS APPLICATION FOR ELECTROCATALYTIC OXIDATION AND VOLTAMMETRIC DETERMINATION OF LEVODOPAMONCADA,VÁLVAREZ-LUEJE,A Levodopa carbon paste ionic liquid modified electrodes Voltammetry A carbon paste electrode was modified with the ionic liquid 1-butyl-4-methylpyridinium hexafluoro phosphate and applied for the study of the electrocatalytic oxidation and voltammetric determination of the drug levodopa. The developed modified electrode was characterized using cyclic voltammetry and scanning electron microscopy. The oxidation of levodopa at the surface of a modified electrode occurs at lower potentials than that of an unmodified carbon paste electrode and both an enhancement of the anodic peak current and a signal narrower and better defined with the modified electrode were observed. Accordingly, a method for the determination of levodopa was developed using differential pulse voltammetry, at pH 4 and with an accumulation time of 4 min. The oxidation of levodopa exhibited a dynamic range between 2.4 - 16.6 μg/mL and detection and quantitation limits of 0.63 and 1.4 μg/mL, respectively. The method was applied to the determination of levodopa in capsules.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.59 n.2 20142014-07-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072014000200026en10.4067/S0717-97072014000200026
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Levodopa carbon paste ionic liquid modified electrodes Voltammetry
spellingShingle	Levodopa carbon paste ionic liquid modified electrodes Voltammetry MONCADA,V ÁLVAREZ-LUEJE,A DEVELOPMENT OF A MODIFIED CARBON ELECTRODE WITH IONIC LIQUID AND ITS APPLICATION FOR ELECTROCATALYTIC OXIDATION AND VOLTAMMETRIC DETERMINATION OF LEVODOPA
description	A carbon paste electrode was modified with the ionic liquid 1-butyl-4-methylpyridinium hexafluoro phosphate and applied for the study of the electrocatalytic oxidation and voltammetric determination of the drug levodopa. The developed modified electrode was characterized using cyclic voltammetry and scanning electron microscopy. The oxidation of levodopa at the surface of a modified electrode occurs at lower potentials than that of an unmodified carbon paste electrode and both an enhancement of the anodic peak current and a signal narrower and better defined with the modified electrode were observed. Accordingly, a method for the determination of levodopa was developed using differential pulse voltammetry, at pH 4 and with an accumulation time of 4 min. The oxidation of levodopa exhibited a dynamic range between 2.4 - 16.6 μg/mL and detection and quantitation limits of 0.63 and 1.4 μg/mL, respectively. The method was applied to the determination of levodopa in capsules.
author	MONCADA,V ÁLVAREZ-LUEJE,A
author_facet	MONCADA,V ÁLVAREZ-LUEJE,A
author_sort	MONCADA,V
title	DEVELOPMENT OF A MODIFIED CARBON ELECTRODE WITH IONIC LIQUID AND ITS APPLICATION FOR ELECTROCATALYTIC OXIDATION AND VOLTAMMETRIC DETERMINATION OF LEVODOPA
title_short	DEVELOPMENT OF A MODIFIED CARBON ELECTRODE WITH IONIC LIQUID AND ITS APPLICATION FOR ELECTROCATALYTIC OXIDATION AND VOLTAMMETRIC DETERMINATION OF LEVODOPA
title_full	DEVELOPMENT OF A MODIFIED CARBON ELECTRODE WITH IONIC LIQUID AND ITS APPLICATION FOR ELECTROCATALYTIC OXIDATION AND VOLTAMMETRIC DETERMINATION OF LEVODOPA
title_fullStr	DEVELOPMENT OF A MODIFIED CARBON ELECTRODE WITH IONIC LIQUID AND ITS APPLICATION FOR ELECTROCATALYTIC OXIDATION AND VOLTAMMETRIC DETERMINATION OF LEVODOPA
title_full_unstemmed	DEVELOPMENT OF A MODIFIED CARBON ELECTRODE WITH IONIC LIQUID AND ITS APPLICATION FOR ELECTROCATALYTIC OXIDATION AND VOLTAMMETRIC DETERMINATION OF LEVODOPA
title_sort	development of a modified carbon electrode with ionic liquid and its application for electrocatalytic oxidation and voltammetric determination of levodopa
publisher	Sociedad Chilena de Química
publishDate	2014
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072014000200026
work_keys_str_mv	AT moncadav developmentofamodifiedcarbonelectrodewithionicliquidanditsapplicationforelectrocatalyticoxidationandvoltammetricdeterminationoflevodopa AT alvarezluejea developmentofamodifiedcarbonelectrodewithionicliquidanditsapplicationforelectrocatalyticoxidationandvoltammetricdeterminationoflevodopa
_version_	1718445519670345728

DEVELOPMENT OF A MODIFIED CARBON ELECTRODE WITH IONIC LIQUID AND ITS APPLICATION FOR ELECTROCATALYTIC OXIDATION AND VOLTAMMETRIC DETERMINATION OF LEVODOPA

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