Optimization of the use of carbon paste electrodes (CPE) for electrochemical study of the chalcopyrite

Detalhes bibliográficos
Autor(a) principal: Horta,Daniela G.
Data de Publicação: 2009
Outros Autores: Bevilaqua,Denise, Acciari,Heloísa A., Garcia Júnior,Oswaldo, Benedetti,Assis V.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Química Nova (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422009000700010
Resumo: The use of carbon paste electrodes (CPE) of mineral sulfides can be useful for electrochemical studies to overcome problems by using massive ones. Using CPE-chalcopyrite some variables were electrochemically evaluated. These variables were: (i) the atmosphere of preparation (air or argon) of CPE and elapsed time till its use; (ii) scan rate for voltammetric measurements and (iii) chalcopyrite concentration in the CPE. Based on cyclic voltammetry, open-circuit potential and electrochemical impedance results the recommendations are: oxygen-free atmosphere to prepare and kept the CPE until around two ours, scan rates from 10 to 40 mV s-1, and chalcopyrite concentrations > 20%.
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spelling Optimization of the use of carbon paste electrodes (CPE) for electrochemical study of the chalcopyritecarbon paste electrodes (CPE)chalcopyriteleachingThe use of carbon paste electrodes (CPE) of mineral sulfides can be useful for electrochemical studies to overcome problems by using massive ones. Using CPE-chalcopyrite some variables were electrochemically evaluated. These variables were: (i) the atmosphere of preparation (air or argon) of CPE and elapsed time till its use; (ii) scan rate for voltammetric measurements and (iii) chalcopyrite concentration in the CPE. Based on cyclic voltammetry, open-circuit potential and electrochemical impedance results the recommendations are: oxygen-free atmosphere to prepare and kept the CPE until around two ours, scan rates from 10 to 40 mV s-1, and chalcopyrite concentrations > 20%.Sociedade Brasileira de Química2009-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422009000700010Química Nova v.32 n.7 2009reponame:Química Nova (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0100-40422009000700010info:eu-repo/semantics/openAccessHorta,Daniela G.Bevilaqua,DeniseAcciari,Heloísa A.Garcia Júnior,OswaldoBenedetti,Assis V.eng2009-10-22T00:00:00Zoai:scielo:S0100-40422009000700010Revistahttps://www.scielo.br/j/qn/ONGhttps://old.scielo.br/oai/scielo-oai.phpquimicanova@sbq.org.br1678-70640100-4042opendoar:2009-10-22T00:00Química Nova (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Optimization of the use of carbon paste electrodes (CPE) for electrochemical study of the chalcopyrite
title Optimization of the use of carbon paste electrodes (CPE) for electrochemical study of the chalcopyrite
spellingShingle Optimization of the use of carbon paste electrodes (CPE) for electrochemical study of the chalcopyrite
Horta,Daniela G.
carbon paste electrodes (CPE)
chalcopyrite
leaching
title_short Optimization of the use of carbon paste electrodes (CPE) for electrochemical study of the chalcopyrite
title_full Optimization of the use of carbon paste electrodes (CPE) for electrochemical study of the chalcopyrite
title_fullStr Optimization of the use of carbon paste electrodes (CPE) for electrochemical study of the chalcopyrite
title_full_unstemmed Optimization of the use of carbon paste electrodes (CPE) for electrochemical study of the chalcopyrite
title_sort Optimization of the use of carbon paste electrodes (CPE) for electrochemical study of the chalcopyrite
author Horta,Daniela G.
author_facet Horta,Daniela G.
Bevilaqua,Denise
Acciari,Heloísa A.
Garcia Júnior,Oswaldo
Benedetti,Assis V.
author_role author
author2 Bevilaqua,Denise
Acciari,Heloísa A.
Garcia Júnior,Oswaldo
Benedetti,Assis V.
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Horta,Daniela G.
Bevilaqua,Denise
Acciari,Heloísa A.
Garcia Júnior,Oswaldo
Benedetti,Assis V.
dc.subject.por.fl_str_mv carbon paste electrodes (CPE)
chalcopyrite
leaching
topic carbon paste electrodes (CPE)
chalcopyrite
leaching
description The use of carbon paste electrodes (CPE) of mineral sulfides can be useful for electrochemical studies to overcome problems by using massive ones. Using CPE-chalcopyrite some variables were electrochemically evaluated. These variables were: (i) the atmosphere of preparation (air or argon) of CPE and elapsed time till its use; (ii) scan rate for voltammetric measurements and (iii) chalcopyrite concentration in the CPE. Based on cyclic voltammetry, open-circuit potential and electrochemical impedance results the recommendations are: oxygen-free atmosphere to prepare and kept the CPE until around two ours, scan rates from 10 to 40 mV s-1, and chalcopyrite concentrations > 20%.
publishDate 2009
dc.date.none.fl_str_mv 2009-01-01
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=S0100-40422009000700010
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422009000700010
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0100-40422009000700010
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.32 n.7 2009
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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