An alternative method for the simultaneous determination of copper and lead for quality control of sugar cane spirit using a nanotube-based sensor
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFLA |
Texto Completo: | http://www.scielo.br/pdf/jbchs/v23n9/aop058_12.pdf http://repositorio.ufla.br/jspui/handle/1/11261 |
Resumo: | The development of an electroanalytical method for simultaneous determination of copper and lead ions in sugar cane spirit (cachaça) using carbon paste electrode modified with ascorbic acid and carbon nanotubes (CPE-AaCNT) is described. Squarewave voltammetry (SWV) with anodic stripping was employed, and this technique was optimized with respect to the following parameters: frequency (50 Hz), amplitude (100 mV) and scan increment (9 mV). The analytical curves were linear in the range from 0.0900 to 7.00 mg L - 1 for lead and copper. The limits of detection were 48.5 and 23.9 µg L - 1 for lead and copper, respectively. The developed method was applied to the simultaneous determination of copper and lead in five commercial samples of sugar cane spirit. The results were in good agreement with those obtained by F AAS/GF AAS (flame atomic absorption spectrometry/graphite furnace atomic absorption spectrometry) and showed that CPE-AaCNT can be successfully employed in the simultaneous determination of these metals in real sugar cane spirit samples. |
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An alternative method for the simultaneous determination of copper and lead for quality control of sugar cane spirit using a nanotube-based sensorCopperLeadCarbon paste electrodeMulti-walled carbon nanotubesAscorbic acidSquarewave voltammetrySugar cane spiritThe development of an electroanalytical method for simultaneous determination of copper and lead ions in sugar cane spirit (cachaça) using carbon paste electrode modified with ascorbic acid and carbon nanotubes (CPE-AaCNT) is described. Squarewave voltammetry (SWV) with anodic stripping was employed, and this technique was optimized with respect to the following parameters: frequency (50 Hz), amplitude (100 mV) and scan increment (9 mV). The analytical curves were linear in the range from 0.0900 to 7.00 mg L - 1 for lead and copper. The limits of detection were 48.5 and 23.9 µg L - 1 for lead and copper, respectively. The developed method was applied to the simultaneous determination of copper and lead in five commercial samples of sugar cane spirit. The results were in good agreement with those obtained by F AAS/GF AAS (flame atomic absorption spectrometry/graphite furnace atomic absorption spectrometry) and showed that CPE-AaCNT can be successfully employed in the simultaneous determination of these metals in real sugar cane spirit samples.Um método eletroanalítico foi desenvolvido para determinação simultânea de íons cobre e chumbo em cachaça empregando eletrodo de pasta de carbono modificado com ácido ascórbico e nanotubos de carbono (CPE-AaCNT). A técnica de voltametria de onda quadrada (SWV) com redissolução anódica foi empregada e otimizada com relação aos seguintes parâmetros: frequência (50 Hz), amplitude (100 mV) e incremento de varredura (9 mV). As curvas analíticas apresentaram intervalo linear de 0,09 a 7,00 mg L - 1 para o chumbo e para o cobre. Os limites de detecção foram de 48,5 e 23,9 µg L - 1 para o chumbo e o cobre, respectivamente. O método desenvolvido foi aplicado na determinação simultânea de chumbo e cobre em cinco amostras comerciais de cachaça. Os resultados apresentaram-se concordantes com os obtidos por F AAS/GF AAS (espectrometria de absorção atômica com chama/espectrometria de absorção atômica com forno de grafite) e revelaram que CPE-AaCNT podem ser empregados com êxito na quantificação de cobre e chumbo em amostras comerciais de cachaça.Sociedade Brasileira de Química2016-06-15T14:40:53Z2016-06-15T14:40:53Z2016-06-15info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleTAVARES, E. de F. L. et al. An alternative method for the simultaneous determination of copper and lead for quality control of sugar cane spirit using a nanotube-based sensor. Journal of the Brazilian Chemical Society, São Paulo, v. 23, n. 9, Sept. 2012.http://www.scielo.br/pdf/jbchs/v23n9/aop058_12.pdfhttp://repositorio.ufla.br/jspui/handle/1/11261Journal of the Brazilian Chemical Societyreponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLATavares, Elisângela de F. L.Okumura, Leonardo L.Cardoso, Maria das GraçasOliveira, Marcelo F. deMagriotis, Zuy MariaSaczk, Adelir A.info:eu-repo/semantics/openAccesspor2016-06-15T14:40:53Zoai:localhost:1/11261Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2016-06-15T14:40:53Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false |
dc.title.none.fl_str_mv |
An alternative method for the simultaneous determination of copper and lead for quality control of sugar cane spirit using a nanotube-based sensor |
title |
An alternative method for the simultaneous determination of copper and lead for quality control of sugar cane spirit using a nanotube-based sensor |
spellingShingle |
An alternative method for the simultaneous determination of copper and lead for quality control of sugar cane spirit using a nanotube-based sensor Tavares, Elisângela de F. L. Copper Lead Carbon paste electrode Multi-walled carbon nanotubes Ascorbic acid Squarewave voltammetry Sugar cane spirit |
title_short |
An alternative method for the simultaneous determination of copper and lead for quality control of sugar cane spirit using a nanotube-based sensor |
title_full |
An alternative method for the simultaneous determination of copper and lead for quality control of sugar cane spirit using a nanotube-based sensor |
title_fullStr |
An alternative method for the simultaneous determination of copper and lead for quality control of sugar cane spirit using a nanotube-based sensor |
title_full_unstemmed |
An alternative method for the simultaneous determination of copper and lead for quality control of sugar cane spirit using a nanotube-based sensor |
title_sort |
An alternative method for the simultaneous determination of copper and lead for quality control of sugar cane spirit using a nanotube-based sensor |
author |
Tavares, Elisângela de F. L. |
author_facet |
Tavares, Elisângela de F. L. Okumura, Leonardo L. Cardoso, Maria das Graças Oliveira, Marcelo F. de Magriotis, Zuy Maria Saczk, Adelir A. |
author_role |
author |
author2 |
Okumura, Leonardo L. Cardoso, Maria das Graças Oliveira, Marcelo F. de Magriotis, Zuy Maria Saczk, Adelir A. |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Tavares, Elisângela de F. L. Okumura, Leonardo L. Cardoso, Maria das Graças Oliveira, Marcelo F. de Magriotis, Zuy Maria Saczk, Adelir A. |
dc.subject.por.fl_str_mv |
Copper Lead Carbon paste electrode Multi-walled carbon nanotubes Ascorbic acid Squarewave voltammetry Sugar cane spirit |
topic |
Copper Lead Carbon paste electrode Multi-walled carbon nanotubes Ascorbic acid Squarewave voltammetry Sugar cane spirit |
description |
The development of an electroanalytical method for simultaneous determination of copper and lead ions in sugar cane spirit (cachaça) using carbon paste electrode modified with ascorbic acid and carbon nanotubes (CPE-AaCNT) is described. Squarewave voltammetry (SWV) with anodic stripping was employed, and this technique was optimized with respect to the following parameters: frequency (50 Hz), amplitude (100 mV) and scan increment (9 mV). The analytical curves were linear in the range from 0.0900 to 7.00 mg L - 1 for lead and copper. The limits of detection were 48.5 and 23.9 µg L - 1 for lead and copper, respectively. The developed method was applied to the simultaneous determination of copper and lead in five commercial samples of sugar cane spirit. The results were in good agreement with those obtained by F AAS/GF AAS (flame atomic absorption spectrometry/graphite furnace atomic absorption spectrometry) and showed that CPE-AaCNT can be successfully employed in the simultaneous determination of these metals in real sugar cane spirit samples. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-06-15T14:40:53Z 2016-06-15T14:40:53Z 2016-06-15 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
TAVARES, E. de F. L. et al. An alternative method for the simultaneous determination of copper and lead for quality control of sugar cane spirit using a nanotube-based sensor. Journal of the Brazilian Chemical Society, São Paulo, v. 23, n. 9, Sept. 2012. http://www.scielo.br/pdf/jbchs/v23n9/aop058_12.pdf http://repositorio.ufla.br/jspui/handle/1/11261 |
identifier_str_mv |
TAVARES, E. de F. L. et al. An alternative method for the simultaneous determination of copper and lead for quality control of sugar cane spirit using a nanotube-based sensor. Journal of the Brazilian Chemical Society, São Paulo, v. 23, n. 9, Sept. 2012. |
url |
http://www.scielo.br/pdf/jbchs/v23n9/aop058_12.pdf http://repositorio.ufla.br/jspui/handle/1/11261 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Química |
publisher.none.fl_str_mv |
Sociedade Brasileira de Química |
dc.source.none.fl_str_mv |
Journal of the Brazilian Chemical Society reponame:Repositório Institucional da UFLA instname:Universidade Federal de Lavras (UFLA) instacron:UFLA |
instname_str |
Universidade Federal de Lavras (UFLA) |
instacron_str |
UFLA |
institution |
UFLA |
reponame_str |
Repositório Institucional da UFLA |
collection |
Repositório Institucional da UFLA |
repository.name.fl_str_mv |
Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA) |
repository.mail.fl_str_mv |
nivaldo@ufla.br || repositorio.biblioteca@ufla.br |
_version_ |
1784550013098000384 |