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dc.contributor.CRUESPUNIVERSIDADE DE ESTADUAL DE CAMPINASpt_BR
dc.identifier.isbnpt
dc.typeArtigo de eventopt_BR
dc.titleDirect Determination Of Cu, Mn, Pb, And Zn In Beer By Thermospray Flame Furnace Atomic Absorption Spectrometrypt_BR
dc.contributor.authorNascentes C.C.pt_BR
dc.contributor.authorKamogawa M.Y.pt_BR
dc.contributor.authorFernandes K.G.pt_BR
dc.contributor.authorArruda M.A.Z.pt_BR
dc.contributor.authorNogueira A.R.A.pt_BR
dc.contributor.authorNobrega J.A.pt_BR
unicamp.authorArruda, M.A.Z., Grupo de Espectrometria, Preparo de Amostras e Mecanização, Departamento de Quimica Analitica, Instituto de Quimica, Universidade Estadual de Campinas, Campinas, SP, Brazilpt_BR
unicamp.author.externalNascentes, C.C., Grupo de Análise Instrumental Aplicada, Departamento de Química, Universidade Federal de São Carlos, Caixa Postal 676, 13560-970, São Carlos, SP, Brazilpt
unicamp.author.externalKamogawa, M.Y., Grupo de Análise Instrumental Aplicada, Departamento de Química, Universidade Federal de São Carlos, Caixa Postal 676, 13560-970, São Carlos, SP, Brazil, Embrapa Pecuária Sudeste, São Carlos SP, Brazilpt
unicamp.author.externalFernandes, K.G., Grupo de Análise Instrumental Aplicada, Departamento de Química, Universidade Federal de São Carlos, Caixa Postal 676, 13560-970, São Carlos, SP, Brazilpt
unicamp.author.externalNogueira, A.R.A., Embrapa Pecuária Sudeste, São Carlos SP, Brazilpt
unicamp.author.externalNóbrega, J.A., Grupo de Análise Instrumental Aplicada, Departamento de Química, Universidade Federal de São Carlos, Caixa Postal 676, 13560-970, São Carlos, SP, Brazilpt
dc.description.abstractIn this work, thermospray flame furnace atomic absorption spectrometry (TS-FF-AAS) was employed for Cu, Mn, Pb, and Zn determination in beer without any sample digestion. The system was optimized and calibration was based on the analyte addition technique. A sample volume of 300 μl was introduced into the hot Ni tube at a flow-rate of 0.4 ml min-1 using 0.14 mol l -1 nitric acid solution or air as carrier. Different Brazilian beers were directly analyzed after ultrasonic degasification. Results were compared with those obtained by graphite furnace atomic absorption spectrometry (GFAAS). The detection limits obtained for Cu, Mn, Pb, and Zn in aqueous solution were 2.2, 18, 1.6, and 0.9 μg l-1, respectively. The relative standard deviations varied from 2.7% to 7.3% (n=8) for solutions containing the analytes in the 25-50 μg l-1 range. The concentration ranges obtained for analytes in beer samples were: Cu: 38.0-155 μg l-1; Mn: 110-348 μg l-1, Pb: 13.0-32.9 μg l-1, and Zn: 52.7-226 μg l-1. Results obtained by TS-FF-AAS and GFAAS were in agreement at a 95% confidence level. The proposed method is fast and simple, since sample digestion is not required and sensitivity can be improved without using expensive devices. The TS-FF-AAS presented suitable sensitivity for determination of Cu, Mn, Pb, and Zn in the quality control of a brewery. © 2005 Elsevier B.V. All rights reserved.en
dc.relation.ispartofSpectrochimica Acta - Part B Atomic Spectroscopypt_BR
dc.publisherpt_BR
dc.date.issued2005pt_BR
dc.identifier.citationSpectrochimica Acta - Part B Atomic Spectroscopy. , v. 60, n. 5, p. 749 - 753, 2005.pt_BR
dc.language.isoenpt_BR
dc.description.volume60pt_BR
dc.description.issuenumber5pt_BR
dc.description.initialpage749pt_BR
dc.description.lastpage753pt_BR
dc.rightsfechadopt_BR
dc.sourceScopuspt_BR
dc.identifier.issn5848547pt_BR
dc.identifier.doi10.1016/j.sab.2005.02.012pt_BR
dc.identifier.urlhttp://www.scopus.com/inward/record.url?eid=2-s2.0-19744378466&partnerID=40&md5=c34781b8dc7c9c3ab9644107edeecd9apt_BR
dc.date.available2015-06-26T14:07:43Z
dc.date.available2015-11-26T15:42:04Z-
dc.date.accessioned2015-06-26T14:07:43Z
dc.date.accessioned2015-11-26T15:42:04Z-
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dc.description.provenanceMade available in DSpace on 2015-11-26T15:42:04Z (GMT). No. of bitstreams: 2 2-s2.0-19744378466.pdf: 111496 bytes, checksum: 9b51d90c5241f48536b9b0a6d1385503 (MD5) 2-s2.0-19744378466.pdf.txt: 23310 bytes, checksum: e760d606ad0a2586ba47139a58e8247a (MD5) Previous issue date: 2005en
dc.identifier.urihttp://www.repositorio.unicamp.br/handle/REPOSIP/93416
dc.identifier.urihttp://repositorio.unicamp.br/jspui/handle/REPOSIP/93416-
dc.identifier.idScopus2-s2.0-19744378466pt_BR
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