ELECTROCATALYTIC OXIDATION AND VOLTAMMETRIC DETERMINATION OF SULFAMETHAZINE USING A MODIFIED CARBON ELECTRODE WITH IONIC LIQUID

ABSTRACT A carbon paste electrode was modified with the ionic liquid 1-methyl-3-octyl imidazolium hexafluorophosphate and it was applied for study the electrocatalytic oxidation and voltammetric determination of the drug sulfamethazine. The developed modified electrode was characterized using cyclic...

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Autores principales:	Urzúa,L., Pérez-Ortiz,M., Álvarez-Lueje,A.
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2018
Materias:	Sulfamethazine carbon paste ionic liquid modified electrodes voltammetry
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072018000103914
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spelling	oai:scielo:S0717-970720180001039142018-05-11ELECTROCATALYTIC OXIDATION AND VOLTAMMETRIC DETERMINATION OF SULFAMETHAZINE USING A MODIFIED CARBON ELECTRODE WITH IONIC LIQUIDUrzúa,L.Pérez-Ortiz,M.Álvarez-Lueje,A. Sulfamethazine carbon paste ionic liquid modified electrodes voltammetry ABSTRACT A carbon paste electrode was modified with the ionic liquid 1-methyl-3-octyl imidazolium hexafluorophosphate and it was applied for study the electrocatalytic oxidation and voltammetric determination of the drug sulfamethazine. The developed modified electrode was characterized using cyclic voltammetry and scanning electron microscopy. The oxidation of sulfamethazine at the surface of 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 sulfamethazine was developed using differential pulse voltammetry, at pH 11 and with an accumulation time of 3 min. The oxidation of sulfamethazine exhibited a dynamic range between 30 and 300 μg/mL and detection and quantitation limits of 54 and 61 μg/mL, respectively. The method was applied to the determination of sulfamethazine in a veterinary commercial solution.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.63 n.1 20182018-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072018000103914en10.4067/s0717-97072018000103914
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Sulfamethazine carbon paste ionic liquid modified electrodes voltammetry
spellingShingle	Sulfamethazine carbon paste ionic liquid modified electrodes voltammetry Urzúa,L. Pérez-Ortiz,M. Álvarez-Lueje,A. ELECTROCATALYTIC OXIDATION AND VOLTAMMETRIC DETERMINATION OF SULFAMETHAZINE USING A MODIFIED CARBON ELECTRODE WITH IONIC LIQUID
description	ABSTRACT A carbon paste electrode was modified with the ionic liquid 1-methyl-3-octyl imidazolium hexafluorophosphate and it was applied for study the electrocatalytic oxidation and voltammetric determination of the drug sulfamethazine. The developed modified electrode was characterized using cyclic voltammetry and scanning electron microscopy. The oxidation of sulfamethazine at the surface of 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 sulfamethazine was developed using differential pulse voltammetry, at pH 11 and with an accumulation time of 3 min. The oxidation of sulfamethazine exhibited a dynamic range between 30 and 300 μg/mL and detection and quantitation limits of 54 and 61 μg/mL, respectively. The method was applied to the determination of sulfamethazine in a veterinary commercial solution.
author	Urzúa,L. Pérez-Ortiz,M. Álvarez-Lueje,A.
author_facet	Urzúa,L. Pérez-Ortiz,M. Álvarez-Lueje,A.
author_sort	Urzúa,L.
title	ELECTROCATALYTIC OXIDATION AND VOLTAMMETRIC DETERMINATION OF SULFAMETHAZINE USING A MODIFIED CARBON ELECTRODE WITH IONIC LIQUID
title_short	ELECTROCATALYTIC OXIDATION AND VOLTAMMETRIC DETERMINATION OF SULFAMETHAZINE USING A MODIFIED CARBON ELECTRODE WITH IONIC LIQUID
title_full	ELECTROCATALYTIC OXIDATION AND VOLTAMMETRIC DETERMINATION OF SULFAMETHAZINE USING A MODIFIED CARBON ELECTRODE WITH IONIC LIQUID
title_fullStr	ELECTROCATALYTIC OXIDATION AND VOLTAMMETRIC DETERMINATION OF SULFAMETHAZINE USING A MODIFIED CARBON ELECTRODE WITH IONIC LIQUID
title_full_unstemmed	ELECTROCATALYTIC OXIDATION AND VOLTAMMETRIC DETERMINATION OF SULFAMETHAZINE USING A MODIFIED CARBON ELECTRODE WITH IONIC LIQUID
title_sort	electrocatalytic oxidation and voltammetric determination of sulfamethazine using a modified carbon electrode with ionic liquid
publisher	Sociedad Chilena de Química
publishDate	2018
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072018000103914
work_keys_str_mv	AT urzual electrocatalyticoxidationandvoltammetricdeterminationofsulfamethazineusingamodifiedcarbonelectrodewithionicliquid AT perezortizm electrocatalyticoxidationandvoltammetricdeterminationofsulfamethazineusingamodifiedcarbonelectrodewithionicliquid AT alvarezluejea electrocatalyticoxidationandvoltammetricdeterminationofsulfamethazineusingamodifiedcarbonelectrodewithionicliquid
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ELECTROCATALYTIC OXIDATION AND VOLTAMMETRIC DETERMINATION OF SULFAMETHAZINE USING A MODIFIED CARBON ELECTRODE WITH IONIC LIQUID

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