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: | 2012 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Journal of the Brazilian Chemical Society (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532012000900005 |
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.Sociedade Brasileira de Química2012-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532012000900005Journal of the Brazilian Chemical Society v.23 n.9 2012reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0103-50532012005000024info:eu-repo/semantics/openAccessTavares,Elisângela de F. L.Okumura,Leonardo L.Cardoso,Maria das GraçasOliveira,Marcelo F. deMagriotis,Zuy MariaSaczk,Adelir A.eng2012-10-15T00:00:00Zoai:scielo:S0103-50532012000900005Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2012-10-15T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)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 |
2012 |
dc.date.none.fl_str_mv |
2012-09-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532012000900005 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532012000900005 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0103-50532012005000024 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
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 v.23 n.9 2012 reponame:Journal of the Brazilian Chemical Society (Online) instname:Sociedade Brasileira de Química (SBQ) instacron:SBQ |
instname_str |
Sociedade Brasileira de Química (SBQ) |
instacron_str |
SBQ |
institution |
SBQ |
reponame_str |
Journal of the Brazilian Chemical Society (Online) |
collection |
Journal of the Brazilian Chemical Society (Online) |
repository.name.fl_str_mv |
Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ) |
repository.mail.fl_str_mv |
||office@jbcs.sbq.org.br |
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1750318174066180096 |