Improved separation of IA and IIA metal cations in matrices with high sodium concentration by capillary electrophoresis with contactless conductometric detection

Detalhes bibliográficos
Autor(a) principal: Silva,José A. Fracassi da
Data de Publicação: 2003
Outros Autores: Ricelli,Nara L., Carvalho,Alexandre Z., Lago,Claudimir L. do
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=S0103-50532003000200013
Resumo: One of the most common uses of capillary electrophoresis with conductometric detection is the analysis of different samples containing alkaline and alkaline earth metals. However, the high sodium content, which is a very common occurrence, may cause loss of resolution of some peaks. In this work, the conditions and a running buffer suitable for serum and hemodialysis fluid analyses are presented. The approach basically consists in the reduction of mobilities of Ca2+ and Mg2+ by addition of methanol and lactate in the running buffer. Limits of detection in the range from 0.5 to 1.0 mmol L-1 with molar Na+/Ca2+ ratios as high as 1000 were obtained, which are conditions that exceed the requirements of the proposed determination.
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spelling Improved separation of IA and IIA metal cations in matrices with high sodium concentration by capillary electrophoresis with contactless conductometric detectioncapillary electrophoresiscontactless conductivity detectionhuman serumhemodialysis fluidOne of the most common uses of capillary electrophoresis with conductometric detection is the analysis of different samples containing alkaline and alkaline earth metals. However, the high sodium content, which is a very common occurrence, may cause loss of resolution of some peaks. In this work, the conditions and a running buffer suitable for serum and hemodialysis fluid analyses are presented. The approach basically consists in the reduction of mobilities of Ca2+ and Mg2+ by addition of methanol and lactate in the running buffer. Limits of detection in the range from 0.5 to 1.0 mmol L-1 with molar Na+/Ca2+ ratios as high as 1000 were obtained, which are conditions that exceed the requirements of the proposed determination.Sociedade Brasileira de Química2003-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532003000200013Journal of the Brazilian Chemical Society v.14 n.2 2003reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0103-50532003000200013info:eu-repo/semantics/openAccessSilva,José A. Fracassi daRicelli,Nara L.Carvalho,Alexandre Z.Lago,Claudimir L. doeng2015-11-26T00:00:00Zoai:scielo:S0103-50532003000200013Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2015-11-26T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Improved separation of IA and IIA metal cations in matrices with high sodium concentration by capillary electrophoresis with contactless conductometric detection
title Improved separation of IA and IIA metal cations in matrices with high sodium concentration by capillary electrophoresis with contactless conductometric detection
spellingShingle Improved separation of IA and IIA metal cations in matrices with high sodium concentration by capillary electrophoresis with contactless conductometric detection
Silva,José A. Fracassi da
capillary electrophoresis
contactless conductivity detection
human serum
hemodialysis fluid
title_short Improved separation of IA and IIA metal cations in matrices with high sodium concentration by capillary electrophoresis with contactless conductometric detection
title_full Improved separation of IA and IIA metal cations in matrices with high sodium concentration by capillary electrophoresis with contactless conductometric detection
title_fullStr Improved separation of IA and IIA metal cations in matrices with high sodium concentration by capillary electrophoresis with contactless conductometric detection
title_full_unstemmed Improved separation of IA and IIA metal cations in matrices with high sodium concentration by capillary electrophoresis with contactless conductometric detection
title_sort Improved separation of IA and IIA metal cations in matrices with high sodium concentration by capillary electrophoresis with contactless conductometric detection
author Silva,José A. Fracassi da
author_facet Silva,José A. Fracassi da
Ricelli,Nara L.
Carvalho,Alexandre Z.
Lago,Claudimir L. do
author_role author
author2 Ricelli,Nara L.
Carvalho,Alexandre Z.
Lago,Claudimir L. do
author2_role author
author
author
dc.contributor.author.fl_str_mv Silva,José A. Fracassi da
Ricelli,Nara L.
Carvalho,Alexandre Z.
Lago,Claudimir L. do
dc.subject.por.fl_str_mv capillary electrophoresis
contactless conductivity detection
human serum
hemodialysis fluid
topic capillary electrophoresis
contactless conductivity detection
human serum
hemodialysis fluid
description One of the most common uses of capillary electrophoresis with conductometric detection is the analysis of different samples containing alkaline and alkaline earth metals. However, the high sodium content, which is a very common occurrence, may cause loss of resolution of some peaks. In this work, the conditions and a running buffer suitable for serum and hemodialysis fluid analyses are presented. The approach basically consists in the reduction of mobilities of Ca2+ and Mg2+ by addition of methanol and lactate in the running buffer. Limits of detection in the range from 0.5 to 1.0 mmol L-1 with molar Na+/Ca2+ ratios as high as 1000 were obtained, which are conditions that exceed the requirements of the proposed determination.
publishDate 2003
dc.date.none.fl_str_mv 2003-04-01
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=S0103-50532003000200013
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532003000200013
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0103-50532003000200013
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.14 n.2 2003
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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