A reliable method of quantification of trace copper in beverages with and without alcohol by spectrophotometry after cloud point extraction

Detalhes bibliográficos
Autor(a) principal: Gürkan,Ramazan
Data de Publicação: 2013
Outros Autores: Altunay,Nail
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Química Nova (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422013000800012
Resumo: A new cloud point extraction (CPE) method was developed for the separation and preconcentration of copper (II) prior to spectrophotometric analysis. For this purpose, 1-(2,4-dimethylphenyl) azonapthalen-2-ol (Sudan II) was used as a chelating agent and the solution pH was adjusted to 10.0 with borate buffer. Polyethylene glycol tert-octylphenyl ether (Triton X-114) was used as an extracting agent in the presence of sodium dodecylsulphate (SDS). After phase separation, based on the cloud point of the mixture, the surfactant-rich phase was diluted with acetone, and the enriched analyte was spectrophotometrically determined at 537 nm. The variables affecting CPE efficiency were optimized. The calibration curve was linear within the range 0.285-20 µg L-1 with a detection limit of 0.085 µg L-1. The method was successfully applied to the quantification of copper in different beverage samples.
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spelling A reliable method of quantification of trace copper in beverages with and without alcohol by spectrophotometry after cloud point extractioncopperbeverage samplescloud point extractionA new cloud point extraction (CPE) method was developed for the separation and preconcentration of copper (II) prior to spectrophotometric analysis. For this purpose, 1-(2,4-dimethylphenyl) azonapthalen-2-ol (Sudan II) was used as a chelating agent and the solution pH was adjusted to 10.0 with borate buffer. Polyethylene glycol tert-octylphenyl ether (Triton X-114) was used as an extracting agent in the presence of sodium dodecylsulphate (SDS). After phase separation, based on the cloud point of the mixture, the surfactant-rich phase was diluted with acetone, and the enriched analyte was spectrophotometrically determined at 537 nm. The variables affecting CPE efficiency were optimized. The calibration curve was linear within the range 0.285-20 µg L-1 with a detection limit of 0.085 µg L-1. The method was successfully applied to the quantification of copper in different beverage samples.Sociedade Brasileira de Química2013-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422013000800012Química Nova v.36 n.8 2013reponame:Química Nova (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0100-40422013000800012info:eu-repo/semantics/openAccessGürkan,RamazanAltunay,Naileng2013-10-04T00:00:00Zoai:scielo:S0100-40422013000800012Revistahttps://www.scielo.br/j/qn/ONGhttps://old.scielo.br/oai/scielo-oai.phpquimicanova@sbq.org.br1678-70640100-4042opendoar:2013-10-04T00:00Química Nova (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv A reliable method of quantification of trace copper in beverages with and without alcohol by spectrophotometry after cloud point extraction
title A reliable method of quantification of trace copper in beverages with and without alcohol by spectrophotometry after cloud point extraction
spellingShingle A reliable method of quantification of trace copper in beverages with and without alcohol by spectrophotometry after cloud point extraction
Gürkan,Ramazan
copper
beverage samples
cloud point extraction
title_short A reliable method of quantification of trace copper in beverages with and without alcohol by spectrophotometry after cloud point extraction
title_full A reliable method of quantification of trace copper in beverages with and without alcohol by spectrophotometry after cloud point extraction
title_fullStr A reliable method of quantification of trace copper in beverages with and without alcohol by spectrophotometry after cloud point extraction
title_full_unstemmed A reliable method of quantification of trace copper in beverages with and without alcohol by spectrophotometry after cloud point extraction
title_sort A reliable method of quantification of trace copper in beverages with and without alcohol by spectrophotometry after cloud point extraction
author Gürkan,Ramazan
author_facet Gürkan,Ramazan
Altunay,Nail
author_role author
author2 Altunay,Nail
author2_role author
dc.contributor.author.fl_str_mv Gürkan,Ramazan
Altunay,Nail
dc.subject.por.fl_str_mv copper
beverage samples
cloud point extraction
topic copper
beverage samples
cloud point extraction
description A new cloud point extraction (CPE) method was developed for the separation and preconcentration of copper (II) prior to spectrophotometric analysis. For this purpose, 1-(2,4-dimethylphenyl) azonapthalen-2-ol (Sudan II) was used as a chelating agent and the solution pH was adjusted to 10.0 with borate buffer. Polyethylene glycol tert-octylphenyl ether (Triton X-114) was used as an extracting agent in the presence of sodium dodecylsulphate (SDS). After phase separation, based on the cloud point of the mixture, the surfactant-rich phase was diluted with acetone, and the enriched analyte was spectrophotometrically determined at 537 nm. The variables affecting CPE efficiency were optimized. The calibration curve was linear within the range 0.285-20 µg L-1 with a detection limit of 0.085 µg L-1. The method was successfully applied to the quantification of copper in different beverage samples.
publishDate 2013
dc.date.none.fl_str_mv 2013-01-01
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=S0100-40422013000800012
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422013000800012
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0100-40422013000800012
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 Química Nova v.36 n.8 2013
reponame:Química Nova (Online)
instname:Sociedade Brasileira de Química (SBQ)
instacron:SBQ
instname_str Sociedade Brasileira de Química (SBQ)
instacron_str SBQ
institution SBQ
reponame_str Química Nova (Online)
collection Química Nova (Online)
repository.name.fl_str_mv Química Nova (Online) - Sociedade Brasileira de Química (SBQ)
repository.mail.fl_str_mv quimicanova@sbq.org.br
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