Experimentos didáticos em química analítica envolvendo separação de fases e pré-concentração

Detalhes bibliográficos
Autor(a) principal: Nascentes,Clésia C.
Data de Publicação: 2002
Outros Autores: Arruda,Marco A. Z., Maniasso,Nelson
Tipo de documento: Artigo
Idioma: por
Título da fonte: Química Nova (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422002000300023
Resumo: The aim of this work was to propose two different didactic experiments, which can be used in practical classes of analytical chemistry courses. More flexible experiments related to the theme, giving some options to the instructor are proposed. In this way, the Experiment 1 was divided in two parts. In the first one, the visualization of two distinct phases separation is emphasized: the rich and the poor phases in surfactant. In the second part, the metal pre-concentration (Co as example) is emphasized. The Experiment 2 has three different parts. In the first one, the complex formation is pointed out, in the second one, the pH influence is shown and in the last one, the influence of the complexation time is demonstrated.
id SBQ-3_71e96ee87b09a04af4da0ca6f5326fb4
oai_identifier_str oai:scielo:S0100-40422002000300023
network_acronym_str SBQ-3
network_name_str Química Nova (Online)
repository_id_str
spelling Experimentos didáticos em química analítica envolvendo separação de fases e pré-concentraçãoseparationspreconcentrationcloud pointatomic spectrometryThe aim of this work was to propose two different didactic experiments, which can be used in practical classes of analytical chemistry courses. More flexible experiments related to the theme, giving some options to the instructor are proposed. In this way, the Experiment 1 was divided in two parts. In the first one, the visualization of two distinct phases separation is emphasized: the rich and the poor phases in surfactant. In the second part, the metal pre-concentration (Co as example) is emphasized. The Experiment 2 has three different parts. In the first one, the complex formation is pointed out, in the second one, the pH influence is shown and in the last one, the influence of the complexation time is demonstrated.Sociedade Brasileira de Química2002-05-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422002000300023Química Nova v.25 n.3 2002reponame:Química Nova (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0100-40422002000300023info:eu-repo/semantics/openAccessNascentes,Clésia C.Arruda,Marco A. Z.Maniasso,Nelsonpor2002-08-07T00:00:00Zoai:scielo:S0100-40422002000300023Revistahttps://www.scielo.br/j/qn/ONGhttps://old.scielo.br/oai/scielo-oai.phpquimicanova@sbq.org.br1678-70640100-4042opendoar:2002-08-07T00:00Química Nova (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Experimentos didáticos em química analítica envolvendo separação de fases e pré-concentração
title Experimentos didáticos em química analítica envolvendo separação de fases e pré-concentração
spellingShingle Experimentos didáticos em química analítica envolvendo separação de fases e pré-concentração
Nascentes,Clésia C.
separations
preconcentration
cloud point
atomic spectrometry
title_short Experimentos didáticos em química analítica envolvendo separação de fases e pré-concentração
title_full Experimentos didáticos em química analítica envolvendo separação de fases e pré-concentração
title_fullStr Experimentos didáticos em química analítica envolvendo separação de fases e pré-concentração
title_full_unstemmed Experimentos didáticos em química analítica envolvendo separação de fases e pré-concentração
title_sort Experimentos didáticos em química analítica envolvendo separação de fases e pré-concentração
author Nascentes,Clésia C.
author_facet Nascentes,Clésia C.
Arruda,Marco A. Z.
Maniasso,Nelson
author_role author
author2 Arruda,Marco A. Z.
Maniasso,Nelson
author2_role author
author
dc.contributor.author.fl_str_mv Nascentes,Clésia C.
Arruda,Marco A. Z.
Maniasso,Nelson
dc.subject.por.fl_str_mv separations
preconcentration
cloud point
atomic spectrometry
topic separations
preconcentration
cloud point
atomic spectrometry
description The aim of this work was to propose two different didactic experiments, which can be used in practical classes of analytical chemistry courses. More flexible experiments related to the theme, giving some options to the instructor are proposed. In this way, the Experiment 1 was divided in two parts. In the first one, the visualization of two distinct phases separation is emphasized: the rich and the poor phases in surfactant. In the second part, the metal pre-concentration (Co as example) is emphasized. The Experiment 2 has three different parts. In the first one, the complex formation is pointed out, in the second one, the pH influence is shown and in the last one, the influence of the complexation time is demonstrated.
publishDate 2002
dc.date.none.fl_str_mv 2002-05-01
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=S0100-40422002000300023
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422002000300023
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv 10.1590/S0100-40422002000300023
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.25 n.3 2002
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_ 1750318102689611776

Registros relacionados