Spectrophotometric Determination of Trace Amounts of Calcium Using the Calcium Complex with Alizarin

Detalhes bibliográficos
Autor(a) principal: Hong-Wen,Gao
Data de Publicação: 2002
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=S0103-50532002000100012
Resumo: The reaction between calcium and alizarin (ALZ) was investigated for the spectrophotometric determination of trace amounts of calcium. The cationic surfactant, cetyltrimethylammonium bromide (CTAB) was useful to increase the sensitivity. The beta-correction method was applied for the determination of the properties of the Ca-ALZ complex instead of ordinary spectrophotometry. Results showed that the complex formed, expressed as Ca(ALZ)2, has a real molar absorptivity equal to 3.74×10³ L mol-1 cm-1 at 630 nm.
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spelling Spectrophotometric Determination of Trace Amounts of Calcium Using the Calcium Complex with Alizarinbeta-correction principlecalcium complexalizarintrace calciumThe reaction between calcium and alizarin (ALZ) was investigated for the spectrophotometric determination of trace amounts of calcium. The cationic surfactant, cetyltrimethylammonium bromide (CTAB) was useful to increase the sensitivity. The beta-correction method was applied for the determination of the properties of the Ca-ALZ complex instead of ordinary spectrophotometry. Results showed that the complex formed, expressed as Ca(ALZ)2, has a real molar absorptivity equal to 3.74×10³ L mol-1 cm-1 at 630 nm.Sociedade Brasileira de Química2002-02-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532002000100012Journal of the Brazilian Chemical Society v.13 n.1 2002reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0103-50532002000100012info:eu-repo/semantics/openAccessHong-Wen,Gaoeng2002-06-20T00:00:00Zoai:scielo:S0103-50532002000100012Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2002-06-20T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Spectrophotometric Determination of Trace Amounts of Calcium Using the Calcium Complex with Alizarin
title Spectrophotometric Determination of Trace Amounts of Calcium Using the Calcium Complex with Alizarin
spellingShingle Spectrophotometric Determination of Trace Amounts of Calcium Using the Calcium Complex with Alizarin
Hong-Wen,Gao
beta-correction principle
calcium complex
alizarin
trace calcium
title_short Spectrophotometric Determination of Trace Amounts of Calcium Using the Calcium Complex with Alizarin
title_full Spectrophotometric Determination of Trace Amounts of Calcium Using the Calcium Complex with Alizarin
title_fullStr Spectrophotometric Determination of Trace Amounts of Calcium Using the Calcium Complex with Alizarin
title_full_unstemmed Spectrophotometric Determination of Trace Amounts of Calcium Using the Calcium Complex with Alizarin
title_sort Spectrophotometric Determination of Trace Amounts of Calcium Using the Calcium Complex with Alizarin
author Hong-Wen,Gao
author_facet Hong-Wen,Gao
author_role author
dc.contributor.author.fl_str_mv Hong-Wen,Gao
dc.subject.por.fl_str_mv beta-correction principle
calcium complex
alizarin
trace calcium
topic beta-correction principle
calcium complex
alizarin
trace calcium
description The reaction between calcium and alizarin (ALZ) was investigated for the spectrophotometric determination of trace amounts of calcium. The cationic surfactant, cetyltrimethylammonium bromide (CTAB) was useful to increase the sensitivity. The beta-correction method was applied for the determination of the properties of the Ca-ALZ complex instead of ordinary spectrophotometry. Results showed that the complex formed, expressed as Ca(ALZ)2, has a real molar absorptivity equal to 3.74×10³ L mol-1 cm-1 at 630 nm.
publishDate 2002
dc.date.none.fl_str_mv 2002-02-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
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status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532002000100012
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532002000100012
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0103-50532002000100012
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.13 n.1 2002
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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