Análise química de sais de cobre fabricados entre 1877 e 1995

Detalhes bibliográficos
Autor(a) principal: Afonso,Júlio Carlos
Data de Publicação: 2004
Outros Autores: Aguiar,Renata de Melo, Gomes,Lôla Maria Braga
Tipo de documento: Artigo
Idioma: por
Título da fonte: Química Nova (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422004000400027
Resumo: Samples of copper compounds covering all of the XXth century and the end of the XIXth century were submitted to classical and instrumental quantitative analysis. The amount of impurities greatly decreased with time, reaching a constant level since the 1960's. The gravimetric method was suitable for the determination of copper although other procedures also gave good or reasonable results. However, for metal contaminants, atomic absorption spectrometry was the best choice because of its lower detection limits, being able to determine several elements in the oldest samples. Ion chromatography detected several anions in copper salts manufactured before the 1950's. An increasing quality of raw materials and a better sensitivity of analytical methods led to quality improvement of copper compounds with time.
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spelling Análise química de sais de cobre fabricados entre 1877 e 1995copper saltschemical analysisquality controlSamples of copper compounds covering all of the XXth century and the end of the XIXth century were submitted to classical and instrumental quantitative analysis. The amount of impurities greatly decreased with time, reaching a constant level since the 1960's. The gravimetric method was suitable for the determination of copper although other procedures also gave good or reasonable results. However, for metal contaminants, atomic absorption spectrometry was the best choice because of its lower detection limits, being able to determine several elements in the oldest samples. Ion chromatography detected several anions in copper salts manufactured before the 1950's. An increasing quality of raw materials and a better sensitivity of analytical methods led to quality improvement of copper compounds with time.Sociedade Brasileira de Química2004-08-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422004000400027Química Nova v.27 n.4 2004reponame:Química Nova (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0100-40422004000400027info:eu-repo/semantics/openAccessAfonso,Júlio CarlosAguiar,Renata de MeloGomes,Lôla Maria Bragapor2004-08-02T00:00:00Zoai:scielo:S0100-40422004000400027Revistahttps://www.scielo.br/j/qn/ONGhttps://old.scielo.br/oai/scielo-oai.phpquimicanova@sbq.org.br1678-70640100-4042opendoar:2004-08-02T00:00Química Nova (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Análise química de sais de cobre fabricados entre 1877 e 1995
title Análise química de sais de cobre fabricados entre 1877 e 1995
spellingShingle Análise química de sais de cobre fabricados entre 1877 e 1995
Afonso,Júlio Carlos
copper salts
chemical analysis
quality control
title_short Análise química de sais de cobre fabricados entre 1877 e 1995
title_full Análise química de sais de cobre fabricados entre 1877 e 1995
title_fullStr Análise química de sais de cobre fabricados entre 1877 e 1995
title_full_unstemmed Análise química de sais de cobre fabricados entre 1877 e 1995
title_sort Análise química de sais de cobre fabricados entre 1877 e 1995
author Afonso,Júlio Carlos
author_facet Afonso,Júlio Carlos
Aguiar,Renata de Melo
Gomes,Lôla Maria Braga
author_role author
author2 Aguiar,Renata de Melo
Gomes,Lôla Maria Braga
author2_role author
author
dc.contributor.author.fl_str_mv Afonso,Júlio Carlos
Aguiar,Renata de Melo
Gomes,Lôla Maria Braga
dc.subject.por.fl_str_mv copper salts
chemical analysis
quality control
topic copper salts
chemical analysis
quality control
description Samples of copper compounds covering all of the XXth century and the end of the XIXth century were submitted to classical and instrumental quantitative analysis. The amount of impurities greatly decreased with time, reaching a constant level since the 1960's. The gravimetric method was suitable for the determination of copper although other procedures also gave good or reasonable results. However, for metal contaminants, atomic absorption spectrometry was the best choice because of its lower detection limits, being able to determine several elements in the oldest samples. Ion chromatography detected several anions in copper salts manufactured before the 1950's. An increasing quality of raw materials and a better sensitivity of analytical methods led to quality improvement of copper compounds with time.
publishDate 2004
dc.date.none.fl_str_mv 2004-08-01
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=S0100-40422004000400027
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422004000400027
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv 10.1590/S0100-40422004000400027
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.27 n.4 2004
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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