Evaluation study of an ion selective field effect transistor electrode for measuring quality parameters of fuel ethanol

Detalhes bibliográficos
Autor(a) principal: Gonzaga,Fabiano B.
Data de Publicação: 2013
Outros Autores: Sobral,Sidney P., Ribeiro,Carla M., Gonçalves,Mary A.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Journal of the Brazilian Chemical Society (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532013000100008
Resumo: An ion selective field effect transistor (ISFET) electrode was evaluated for measuring pH and acid number (AN) of fuel ethanol and compared to two glass electrodes with different reference filling solutions: KCl aqueous solution (glass-KCl electrode) and LiCl ethanolic solution (glass-LiCl electrode). pH was determined at different measurement times and AN was determined using automatic potentiometric titration. For pH, the glass-KCl electrode showed the best precision and stability, with an average repeatability about four times better when compared to the ISFET electrode for the measurement time of 30 s (as indicated in the ASTM D6423 standard). For AN, the glass-KCl and glass-LiCl electrodes showed similar repeatabilities, which were about three times better than that of the ISFET electrode. In addition, the results from a recovery study demonstrated better accuracy of the glass-LiCl electrode, with a recovery value of 100.1%.
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spelling Evaluation study of an ion selective field effect transistor electrode for measuring quality parameters of fuel ethanolISFET electrodeglass electrodefuel ethanolacid numberpHAn ion selective field effect transistor (ISFET) electrode was evaluated for measuring pH and acid number (AN) of fuel ethanol and compared to two glass electrodes with different reference filling solutions: KCl aqueous solution (glass-KCl electrode) and LiCl ethanolic solution (glass-LiCl electrode). pH was determined at different measurement times and AN was determined using automatic potentiometric titration. For pH, the glass-KCl electrode showed the best precision and stability, with an average repeatability about four times better when compared to the ISFET electrode for the measurement time of 30 s (as indicated in the ASTM D6423 standard). For AN, the glass-KCl and glass-LiCl electrodes showed similar repeatabilities, which were about three times better than that of the ISFET electrode. In addition, the results from a recovery study demonstrated better accuracy of the glass-LiCl electrode, with a recovery value of 100.1%.Sociedade Brasileira de Química2013-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532013000100008Journal of the Brazilian Chemical Society v.24 n.1 2013reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0103-50532013000100008info:eu-repo/semantics/openAccessGonzaga,Fabiano B.Sobral,Sidney P.Ribeiro,Carla M.Gonçalves,Mary A.eng2013-02-28T00:00:00Zoai:scielo:S0103-50532013000100008Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2013-02-28T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Evaluation study of an ion selective field effect transistor electrode for measuring quality parameters of fuel ethanol
title Evaluation study of an ion selective field effect transistor electrode for measuring quality parameters of fuel ethanol
spellingShingle Evaluation study of an ion selective field effect transistor electrode for measuring quality parameters of fuel ethanol
Gonzaga,Fabiano B.
ISFET electrode
glass electrode
fuel ethanol
acid number
pH
title_short Evaluation study of an ion selective field effect transistor electrode for measuring quality parameters of fuel ethanol
title_full Evaluation study of an ion selective field effect transistor electrode for measuring quality parameters of fuel ethanol
title_fullStr Evaluation study of an ion selective field effect transistor electrode for measuring quality parameters of fuel ethanol
title_full_unstemmed Evaluation study of an ion selective field effect transistor electrode for measuring quality parameters of fuel ethanol
title_sort Evaluation study of an ion selective field effect transistor electrode for measuring quality parameters of fuel ethanol
author Gonzaga,Fabiano B.
author_facet Gonzaga,Fabiano B.
Sobral,Sidney P.
Ribeiro,Carla M.
Gonçalves,Mary A.
author_role author
author2 Sobral,Sidney P.
Ribeiro,Carla M.
Gonçalves,Mary A.
author2_role author
author
author
dc.contributor.author.fl_str_mv Gonzaga,Fabiano B.
Sobral,Sidney P.
Ribeiro,Carla M.
Gonçalves,Mary A.
dc.subject.por.fl_str_mv ISFET electrode
glass electrode
fuel ethanol
acid number
pH
topic ISFET electrode
glass electrode
fuel ethanol
acid number
pH
description An ion selective field effect transistor (ISFET) electrode was evaluated for measuring pH and acid number (AN) of fuel ethanol and compared to two glass electrodes with different reference filling solutions: KCl aqueous solution (glass-KCl electrode) and LiCl ethanolic solution (glass-LiCl electrode). pH was determined at different measurement times and AN was determined using automatic potentiometric titration. For pH, the glass-KCl electrode showed the best precision and stability, with an average repeatability about four times better when compared to the ISFET electrode for the measurement time of 30 s (as indicated in the ASTM D6423 standard). For AN, the glass-KCl and glass-LiCl electrodes showed similar repeatabilities, which were about three times better than that of the ISFET electrode. In addition, the results from a recovery study demonstrated better accuracy of the glass-LiCl electrode, with a recovery value of 100.1%.
publishDate 2013
dc.date.none.fl_str_mv 2013-01-01
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=S0103-50532013000100008
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532013000100008
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0103-50532013000100008
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 Journal of the Brazilian Chemical Society v.24 n.1 2013
reponame:Journal of the Brazilian Chemical Society (Online)
instname:Sociedade Brasileira de Química (SBQ)
instacron:SBQ
instname_str Sociedade Brasileira de Química (SBQ)
instacron_str SBQ
institution SBQ
reponame_str Journal of the Brazilian Chemical Society (Online)
collection Journal of the Brazilian Chemical Society (Online)
repository.name.fl_str_mv Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)
repository.mail.fl_str_mv ||office@jbcs.sbq.org.br
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