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Voltammetric Determination of Cocaine in Confiscated Samples Using a Carbon Paste Electrode Modified with Different [UO(2)(X-MeOsalen)(H(2)O)] · H(2)O Complexes

A fast and non-destructive voltammetric method to detect cocaine in confiscated samples based on carbon paste electrode modified with methoxy-substituted N,N'-ethylene-bis(salcylideneiminato)uranyl(VI)complexes, [UO(2)(X-MeOSalen)(H(2)O)].H(2)O, where X corresponds to the positions 3, 4 or 5 of...

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Autores principales: de Oliveira, Laura Siqueira, dos Santos Poles, Ana Paula, Balbino, Marco Antonio, Teles de Menezes, Matheus Manoel, de Andrade, José Fernando, Dockal, Edward Ralph, Tristão, Heloísa Maria, de Oliveira, Marcelo Firmino
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Molecular Diversity Preservation International (MDPI) 2013
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3715271/
https://www.ncbi.nlm.nih.gov/pubmed/23771156
http://dx.doi.org/10.3390/s130607668
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author de Oliveira, Laura Siqueira
dos Santos Poles, Ana Paula
Balbino, Marco Antonio
Teles de Menezes, Matheus Manoel
de Andrade, José Fernando
Dockal, Edward Ralph
Tristão, Heloísa Maria
de Oliveira, Marcelo Firmino
author_facet de Oliveira, Laura Siqueira
dos Santos Poles, Ana Paula
Balbino, Marco Antonio
Teles de Menezes, Matheus Manoel
de Andrade, José Fernando
Dockal, Edward Ralph
Tristão, Heloísa Maria
de Oliveira, Marcelo Firmino
author_sort de Oliveira, Laura Siqueira
collection PubMed
description A fast and non-destructive voltammetric method to detect cocaine in confiscated samples based on carbon paste electrode modified with methoxy-substituted N,N'-ethylene-bis(salcylideneiminato)uranyl(VI)complexes, [UO(2)(X-MeOSalen)(H(2)O)].H(2)O, where X corresponds to the positions 3, 4 or 5 of the methoxy group on the aromatic ring, is described. The electrochemical behavior of the modified electrode and the electrochemical detection of cocaine were investigated using cyclic voltammetry. Using 0.1 mol·L(−1) KCl as supporting-electrolyte, a concentration-dependent, well-defined peak current for cocaine at 0.62 V, with an amperometric sensitivity of 6.25 × 10(4) μA·mol·L(−1) for cocaine concentrations ranging between 1.0 × 10(−7) and 1.3 × 10(−6) mol·L(−1) was obtained. Chemical interference studies using lidocaine and procaine were performed. The position of the methoxy group affects the results, with the 3-methoxy derivative being the most sensitive.
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spelling pubmed-37152712013-07-24 Voltammetric Determination of Cocaine in Confiscated Samples Using a Carbon Paste Electrode Modified with Different [UO(2)(X-MeOsalen)(H(2)O)] · H(2)O Complexes de Oliveira, Laura Siqueira dos Santos Poles, Ana Paula Balbino, Marco Antonio Teles de Menezes, Matheus Manoel de Andrade, José Fernando Dockal, Edward Ralph Tristão, Heloísa Maria de Oliveira, Marcelo Firmino Sensors (Basel) Article A fast and non-destructive voltammetric method to detect cocaine in confiscated samples based on carbon paste electrode modified with methoxy-substituted N,N'-ethylene-bis(salcylideneiminato)uranyl(VI)complexes, [UO(2)(X-MeOSalen)(H(2)O)].H(2)O, where X corresponds to the positions 3, 4 or 5 of the methoxy group on the aromatic ring, is described. The electrochemical behavior of the modified electrode and the electrochemical detection of cocaine were investigated using cyclic voltammetry. Using 0.1 mol·L(−1) KCl as supporting-electrolyte, a concentration-dependent, well-defined peak current for cocaine at 0.62 V, with an amperometric sensitivity of 6.25 × 10(4) μA·mol·L(−1) for cocaine concentrations ranging between 1.0 × 10(−7) and 1.3 × 10(−6) mol·L(−1) was obtained. Chemical interference studies using lidocaine and procaine were performed. The position of the methoxy group affects the results, with the 3-methoxy derivative being the most sensitive. Molecular Diversity Preservation International (MDPI) 2013-06-14 /pmc/articles/PMC3715271/ /pubmed/23771156 http://dx.doi.org/10.3390/s130607668 Text en © 2013 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).
spellingShingle Article
de Oliveira, Laura Siqueira
dos Santos Poles, Ana Paula
Balbino, Marco Antonio
Teles de Menezes, Matheus Manoel
de Andrade, José Fernando
Dockal, Edward Ralph
Tristão, Heloísa Maria
de Oliveira, Marcelo Firmino
Voltammetric Determination of Cocaine in Confiscated Samples Using a Carbon Paste Electrode Modified with Different [UO(2)(X-MeOsalen)(H(2)O)] · H(2)O Complexes
title Voltammetric Determination of Cocaine in Confiscated Samples Using a Carbon Paste Electrode Modified with Different [UO(2)(X-MeOsalen)(H(2)O)] · H(2)O Complexes
title_full Voltammetric Determination of Cocaine in Confiscated Samples Using a Carbon Paste Electrode Modified with Different [UO(2)(X-MeOsalen)(H(2)O)] · H(2)O Complexes
title_fullStr Voltammetric Determination of Cocaine in Confiscated Samples Using a Carbon Paste Electrode Modified with Different [UO(2)(X-MeOsalen)(H(2)O)] · H(2)O Complexes
title_full_unstemmed Voltammetric Determination of Cocaine in Confiscated Samples Using a Carbon Paste Electrode Modified with Different [UO(2)(X-MeOsalen)(H(2)O)] · H(2)O Complexes
title_short Voltammetric Determination of Cocaine in Confiscated Samples Using a Carbon Paste Electrode Modified with Different [UO(2)(X-MeOsalen)(H(2)O)] · H(2)O Complexes
title_sort voltammetric determination of cocaine in confiscated samples using a carbon paste electrode modified with different [uo(2)(x-meosalen)(h(2)o)] · h(2)o complexes
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3715271/
https://www.ncbi.nlm.nih.gov/pubmed/23771156
http://dx.doi.org/10.3390/s130607668
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