Flame AAS determination of metal ions in fuel ethanol after preconcentration on acid carboxymethylcellulose (CMCH)

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dc.contributor.authorPadilha, P. M.
dc.contributor.authorPadilha, CCF
dc.contributor.authorRocha, Julio Cesar [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T13:49:20Z
dc.date.available2014-05-20T13:49:20Z
dc.date.issued1999-01-01
dc.description.abstractThis paper describes the preparation of acid carboxymethylcellulose (CMCH), and the results of a study on the adsorption and preconcentration (using batch and flow-through column methods) of Cd(II), Cu(II), Cr(III), Fe(III), Ni(II) and Zn(II) in ethanol medium. The adsorption capacities for each metallic ion were (in mmol g(-1)) Cd(II) = 0.92; Cu(II) = 1.45; Cr(III) = 1.70; Fe(III) = 1.60; Ni(II) = 1.30; and Zn(II) = 1.10. By means of the flow-through method, a recovery of ca. 100% of the metallic ions adsorbed in a column packed with 2 g of CMCH was found when 5.0 mL of 1.0 mol L-1 hydrochloric acid were used as eluent. An enrichment factor of 20 (100 mt solution containing 50 mu g L-1 of the metallic ions, concentrated to 5.0 mt) was obtained by this preconcentration procedure. The sorption-desorption procedure applied allowed the development of a preconcentration and Flame AAS quantification method of metallic ions in fuel ethanol at trace levels.en
dc.description.affiliationUNESP, Inst Biociencias, Dept Quim & Bioquim, BR-18618000 Botucatu, SP, Brazil
dc.description.affiliationUNESP, Inst Biociencias, Dept Fis & Biofis, BR-18618000 Botucatu, SP, Brazil
dc.description.affiliationUNESP, Inst Quim, Dept Quim Analit, BR-14800900 Araraquara, SP, Brazil
dc.description.affiliationUnespUNESP, Inst Biociencias, Dept Quim & Bioquim, BR-18618000 Botucatu, SP, Brazil
dc.description.affiliationUnespUNESP, Inst Biociencias, Dept Fis & Biofis, BR-18618000 Botucatu, SP, Brazil
dc.description.affiliationUnespUNESP, Inst Quim, Dept Quim Analit, BR-14800900 Araraquara, SP, Brazil
dc.format.extent299-303
dc.identifierhttps://getinfo.de/app/Flame-AAS-determination-of-metal-ions-in-fuel-ethanol/id/BLSE%3ARN074402630
dc.identifier.citationQuimica Analitica. Barcelona: Elsevier Informacion Professional, S A, v. 18, n. 4, p. 299-303, 1999.
dc.identifier.issn0212-0569
dc.identifier.lattes6981448637456391
dc.identifier.urihttp://hdl.handle.net/11449/17573
dc.identifier.wosWOS:000086285000005
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofQuimica Analitica
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectpreconcentrationpt
dc.subjectcarboxymethylcellulosept
dc.subjectmetallic ions in ethanolpt
dc.subjectflame atomic absorption spectroscopypt
dc.titleFlame AAS determination of metal ions in fuel ethanol after preconcentration on acid carboxymethylcellulose (CMCH)en
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.author.lattes6981448637456391
unesp.author.orcid0000-0003-4179-0574[2]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências, Botucatupt
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt

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