Determination of Na and K in biodiesel by flame atomic emission spectrometry and microemulsion sample preparation
Autor(a) principal: | |
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Data de Publicação: | 2008 |
Outros Autores: | , , , , |
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=S0103-50532008000500008 |
Resumo: | A method for the determination of Na and K in biodiesel, from different vegetable oils, is proposed. The advantages of the FAES were combined with the simplicity of microemulsion preparation and calibration using aqueous standards. Microemulsions were prepared by mixing biodiesel samples with n-propanol and aqueous acid solution, which allowed the use of inorganic aqueous standards for the calibration. Sample introduction through discrete aspiration (DA) or by continuous aspiration (CA) were compared, presenting similar LODs, in the order of 0.1 µg g-1 for both analytes, adequate to the established limits in the Brazilian legislation. The accuracy of the method was checked through recovery tests, with results between 83% and 120%, and through the comparison of the results with those obtained by ICP OES. |
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Determination of Na and K in biodiesel by flame atomic emission spectrometry and microemulsion sample preparationbiodieselmicroemulsionFAESsodium and potassiumA method for the determination of Na and K in biodiesel, from different vegetable oils, is proposed. The advantages of the FAES were combined with the simplicity of microemulsion preparation and calibration using aqueous standards. Microemulsions were prepared by mixing biodiesel samples with n-propanol and aqueous acid solution, which allowed the use of inorganic aqueous standards for the calibration. Sample introduction through discrete aspiration (DA) or by continuous aspiration (CA) were compared, presenting similar LODs, in the order of 0.1 µg g-1 for both analytes, adequate to the established limits in the Brazilian legislation. The accuracy of the method was checked through recovery tests, with results between 83% and 120%, and through the comparison of the results with those obtained by ICP OES.Sociedade Brasileira de Química2008-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532008000500008Journal of the Brazilian Chemical Society v.19 n.5 2008reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0103-50532008000500008info:eu-repo/semantics/openAccessChaves,Eduardo SidineiSaint' Pierre,Tatiana Dillenburgdos Santos,Eder JoséTormen,LucianoBascuñan,Vera Lúcia Azzolin FrescuraCurtius,Adilson Joséeng2008-08-05T00:00:00Zoai:scielo:S0103-50532008000500008Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2008-08-05T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false |
dc.title.none.fl_str_mv |
Determination of Na and K in biodiesel by flame atomic emission spectrometry and microemulsion sample preparation |
title |
Determination of Na and K in biodiesel by flame atomic emission spectrometry and microemulsion sample preparation |
spellingShingle |
Determination of Na and K in biodiesel by flame atomic emission spectrometry and microemulsion sample preparation Chaves,Eduardo Sidinei biodiesel microemulsion FAES sodium and potassium |
title_short |
Determination of Na and K in biodiesel by flame atomic emission spectrometry and microemulsion sample preparation |
title_full |
Determination of Na and K in biodiesel by flame atomic emission spectrometry and microemulsion sample preparation |
title_fullStr |
Determination of Na and K in biodiesel by flame atomic emission spectrometry and microemulsion sample preparation |
title_full_unstemmed |
Determination of Na and K in biodiesel by flame atomic emission spectrometry and microemulsion sample preparation |
title_sort |
Determination of Na and K in biodiesel by flame atomic emission spectrometry and microemulsion sample preparation |
author |
Chaves,Eduardo Sidinei |
author_facet |
Chaves,Eduardo Sidinei Saint' Pierre,Tatiana Dillenburg dos Santos,Eder José Tormen,Luciano Bascuñan,Vera Lúcia Azzolin Frescura Curtius,Adilson José |
author_role |
author |
author2 |
Saint' Pierre,Tatiana Dillenburg dos Santos,Eder José Tormen,Luciano Bascuñan,Vera Lúcia Azzolin Frescura Curtius,Adilson José |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Chaves,Eduardo Sidinei Saint' Pierre,Tatiana Dillenburg dos Santos,Eder José Tormen,Luciano Bascuñan,Vera Lúcia Azzolin Frescura Curtius,Adilson José |
dc.subject.por.fl_str_mv |
biodiesel microemulsion FAES sodium and potassium |
topic |
biodiesel microemulsion FAES sodium and potassium |
description |
A method for the determination of Na and K in biodiesel, from different vegetable oils, is proposed. The advantages of the FAES were combined with the simplicity of microemulsion preparation and calibration using aqueous standards. Microemulsions were prepared by mixing biodiesel samples with n-propanol and aqueous acid solution, which allowed the use of inorganic aqueous standards for the calibration. Sample introduction through discrete aspiration (DA) or by continuous aspiration (CA) were compared, presenting similar LODs, in the order of 0.1 µg g-1 for both analytes, adequate to the established limits in the Brazilian legislation. The accuracy of the method was checked through recovery tests, with results between 83% and 120%, and through the comparison of the results with those obtained by ICP OES. |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008-01-01 |
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=S0103-50532008000500008 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532008000500008 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0103-50532008000500008 |
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.19 n.5 2008 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 |
_version_ |
1750318168994217984 |