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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...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Molecular Diversity Preservation International (MDPI)
2013
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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. |
format | Online Article Text |
id | pubmed-3715271 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2013 |
publisher | Molecular Diversity Preservation International (MDPI) |
record_format | MEDLINE/PubMed |
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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