Determinação do teor de edta remanescente em soluções de limpeza de equipamentos industriais

Detalhes bibliográficos
Autor(a) principal: Rodella,Arnaldo Antonio
Data de Publicação: 2007
Tipo de documento: Relatório
Idioma: por
Título da fonte: Química Nova (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422007000400042
Resumo: Cleaning solutions containing EDTA are widely employed to remove incrustation despite of the costs involved. The free content of EDTA in commercial solutions may be determined by mixing an aliquot to ammonium oxalate and using a standard calcium solution as titrant. The end-point is detected by the formation of insoluble calcium oxalate after all EDTA is complexed. A system for turbidimetric detection of the end-point was envisaged to substitute the visual detection, which impaired the analyses of dark samples. The proposed method was tested with real samples and good accuracy and precision was obtained.
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spelling Determinação do teor de edta remanescente em soluções de limpeza de equipamentos industriaisEDTA analysisturbidimetric end-pointindustrial cleaning solutionsCleaning solutions containing EDTA are widely employed to remove incrustation despite of the costs involved. The free content of EDTA in commercial solutions may be determined by mixing an aliquot to ammonium oxalate and using a standard calcium solution as titrant. The end-point is detected by the formation of insoluble calcium oxalate after all EDTA is complexed. A system for turbidimetric detection of the end-point was envisaged to substitute the visual detection, which impaired the analyses of dark samples. The proposed method was tested with real samples and good accuracy and precision was obtained.Sociedade Brasileira de Química2007-08-01info:eu-repo/semantics/reportinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422007000400042Química Nova v.30 n.4 2007reponame:Química Nova (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0100-40422007000400042info:eu-repo/semantics/openAccessRodella,Arnaldo Antoniopor2007-08-10T00:00:00Zoai:scielo:S0100-40422007000400042Revistahttps://www.scielo.br/j/qn/ONGhttps://old.scielo.br/oai/scielo-oai.phpquimicanova@sbq.org.br1678-70640100-4042opendoar:2007-08-10T00:00Química Nova (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Determinação do teor de edta remanescente em soluções de limpeza de equipamentos industriais
title Determinação do teor de edta remanescente em soluções de limpeza de equipamentos industriais
spellingShingle Determinação do teor de edta remanescente em soluções de limpeza de equipamentos industriais
Rodella,Arnaldo Antonio
EDTA analysis
turbidimetric end-point
industrial cleaning solutions
title_short Determinação do teor de edta remanescente em soluções de limpeza de equipamentos industriais
title_full Determinação do teor de edta remanescente em soluções de limpeza de equipamentos industriais
title_fullStr Determinação do teor de edta remanescente em soluções de limpeza de equipamentos industriais
title_full_unstemmed Determinação do teor de edta remanescente em soluções de limpeza de equipamentos industriais
title_sort Determinação do teor de edta remanescente em soluções de limpeza de equipamentos industriais
author Rodella,Arnaldo Antonio
author_facet Rodella,Arnaldo Antonio
author_role author
dc.contributor.author.fl_str_mv Rodella,Arnaldo Antonio
dc.subject.por.fl_str_mv EDTA analysis
turbidimetric end-point
industrial cleaning solutions
topic EDTA analysis
turbidimetric end-point
industrial cleaning solutions
description Cleaning solutions containing EDTA are widely employed to remove incrustation despite of the costs involved. The free content of EDTA in commercial solutions may be determined by mixing an aliquot to ammonium oxalate and using a standard calcium solution as titrant. The end-point is detected by the formation of insoluble calcium oxalate after all EDTA is complexed. A system for turbidimetric detection of the end-point was envisaged to substitute the visual detection, which impaired the analyses of dark samples. The proposed method was tested with real samples and good accuracy and precision was obtained.
publishDate 2007
dc.date.none.fl_str_mv 2007-08-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/report
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format report
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422007000400042
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422007000400042
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv 10.1590/S0100-40422007000400042
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.30 n.4 2007
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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