Determinação do teor de edta remanescente em soluções de limpeza de equipamentos industriais
Autor(a) principal: | |
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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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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 |
_version_ |
1750318106481262592 |