Titulador potenciométrico automatizado baseado em sistema de fluxo monossegmentado

Detalhes bibliográficos
Autor(a) principal: Ganzarolli,Edgard Moreira
Data de Publicação: 1999
Outros Autores: Lehmkuhl,Arilson, Queiróz,Roldão Rosevelt R. de, Souza,Ivan Gonçalves de
Tipo de documento: Artigo
Idioma: por
Título da fonte: Química Nova (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40421999000100011
Resumo: A new automated system for acid-base flow titrations is proposed. In the operation mode, several sample to titrant volumetric ratios are injected in an air segmented plug. Five three way solenoid valves and three acrilic junctions, assembled in a hidrodynamic injection system, were accountable for the monosegmented reagents plug formation. A turbulent flow reactor was used for a perfect mix of reagents in the plug. The detector system employed a glass combined electrode fitted in an acrilic holder. Titrations of hydrochloric, nitric and acetic acids, in several concentrations, were performed with standard sodium hidroxide, for evaluation of the efficiency of the system. The relative standard deviation of the determinations was about ±0,5% and each titration was carried out in 3-4 minutes. A Quick BASIC 4.5® program was developed for the titrator control.
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spelling Titulador potenciométrico automatizado baseado em sistema de fluxo monossegmentadoautomationpotentiometric titrationsflow analysisA new automated system for acid-base flow titrations is proposed. In the operation mode, several sample to titrant volumetric ratios are injected in an air segmented plug. Five three way solenoid valves and three acrilic junctions, assembled in a hidrodynamic injection system, were accountable for the monosegmented reagents plug formation. A turbulent flow reactor was used for a perfect mix of reagents in the plug. The detector system employed a glass combined electrode fitted in an acrilic holder. Titrations of hydrochloric, nitric and acetic acids, in several concentrations, were performed with standard sodium hidroxide, for evaluation of the efficiency of the system. The relative standard deviation of the determinations was about ±0,5% and each titration was carried out in 3-4 minutes. A Quick BASIC 4.5® program was developed for the titrator control.Sociedade Brasileira de Química1999-02-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40421999000100011Química Nova v.22 n.1 1999reponame:Química Nova (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0100-40421999000100011info:eu-repo/semantics/openAccessGanzarolli,Edgard MoreiraLehmkuhl,ArilsonQueiróz,Roldão Rosevelt R. deSouza,Ivan Gonçalves depor2000-09-11T00:00:00Zoai:scielo:S0100-40421999000100011Revistahttps://www.scielo.br/j/qn/ONGhttps://old.scielo.br/oai/scielo-oai.phpquimicanova@sbq.org.br1678-70640100-4042opendoar:2000-09-11T00:00Química Nova (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Titulador potenciométrico automatizado baseado em sistema de fluxo monossegmentado
title Titulador potenciométrico automatizado baseado em sistema de fluxo monossegmentado
spellingShingle Titulador potenciométrico automatizado baseado em sistema de fluxo monossegmentado
Ganzarolli,Edgard Moreira
automation
potentiometric titrations
flow analysis
title_short Titulador potenciométrico automatizado baseado em sistema de fluxo monossegmentado
title_full Titulador potenciométrico automatizado baseado em sistema de fluxo monossegmentado
title_fullStr Titulador potenciométrico automatizado baseado em sistema de fluxo monossegmentado
title_full_unstemmed Titulador potenciométrico automatizado baseado em sistema de fluxo monossegmentado
title_sort Titulador potenciométrico automatizado baseado em sistema de fluxo monossegmentado
author Ganzarolli,Edgard Moreira
author_facet Ganzarolli,Edgard Moreira
Lehmkuhl,Arilson
Queiróz,Roldão Rosevelt R. de
Souza,Ivan Gonçalves de
author_role author
author2 Lehmkuhl,Arilson
Queiróz,Roldão Rosevelt R. de
Souza,Ivan Gonçalves de
author2_role author
author
author
dc.contributor.author.fl_str_mv Ganzarolli,Edgard Moreira
Lehmkuhl,Arilson
Queiróz,Roldão Rosevelt R. de
Souza,Ivan Gonçalves de
dc.subject.por.fl_str_mv automation
potentiometric titrations
flow analysis
topic automation
potentiometric titrations
flow analysis
description A new automated system for acid-base flow titrations is proposed. In the operation mode, several sample to titrant volumetric ratios are injected in an air segmented plug. Five three way solenoid valves and three acrilic junctions, assembled in a hidrodynamic injection system, were accountable for the monosegmented reagents plug formation. A turbulent flow reactor was used for a perfect mix of reagents in the plug. The detector system employed a glass combined electrode fitted in an acrilic holder. Titrations of hydrochloric, nitric and acetic acids, in several concentrations, were performed with standard sodium hidroxide, for evaluation of the efficiency of the system. The relative standard deviation of the determinations was about ±0,5% and each titration was carried out in 3-4 minutes. A Quick BASIC 4.5® program was developed for the titrator control.
publishDate 1999
dc.date.none.fl_str_mv 1999-02-01
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=S0100-40421999000100011
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40421999000100011
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv 10.1590/S0100-40421999000100011
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.22 n.1 1999
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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