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dc.contributor.CRUESPUNIVERSIDADE DE ESTADUAL DE CAMPINASpt_BR
dc.typeArtigo de periódicopt_BR
dc.titleDetermination Of Total Inorganic Arsenic In Water Using On-line Pre-concentration And Hydride-generation Atomic Absorption Spectrometry.pt_BR
dc.contributor.authorBortoleto, Gisele Gpt_BR
dc.contributor.authorCadore, Solangept_BR
unicamp.authorGisele G Bortoleto, Universidade Estadual de Campinas, Instituto de Química, Caixa Postal 6154, 13.084-971 Campinas, SP, Brazil.pt_BR
unicamp.author.externalSolange Cadore,pt
dc.description.abstractA rapid and sensitive method for the on-line separation and pre-concentration of inorganic arsenic in water samples is described. The analyte in the pentavalent oxidation state is reduced to its trivalent form with l-cysteine and the total inorganic arsenic is sorbed onto activated alumina in the acid form in a mini-column coupled to a FI-HG AAS system. Afterwards, it is eluted with 3moll(-1) HCl. An enrichment factor of 7 was obtained, allowing an analytical flow rate of about 28 determinations per hour. The limits of detection (3sigma) and of quantification (10sigma) were calculated as LOD=0.15mugl(-1) of As and LOQ=0.5mugl(-1) of As, respectively. Relative standard deviations (n=10) less than 8% were obtained for different arsenic concentrations and the accuracy was verified by analysing certified reference materials. Different kinds of samples, such as mineral water, drinking water, river water and natural spring water were analyzed and good agreement was obtained with the values from spiked experiments.en
dc.relation.ispartofTalantapt_BR
dc.relation.ispartofabbreviationTalantapt_BR
dc.date.issued2005-Julpt_BR
dc.identifier.citationTalanta. v. 67, n. 1, p. 169-74, 2005-Jul.pt_BR
dc.language.isoengpt_BR
dc.description.volume67pt_BR
dc.description.firstpage169-74pt_BR
dc.rightsfechadopt_BR
dc.rights.holderpt_BR
dc.sourcePubMedpt_BR
dc.identifier.issn1873-3573pt_BR
dc.identifier.doi10.1016/j.talanta.2005.02.012pt_BR
dc.identifier.urlhttp://www.ncbi.nlm.nih.gov/pubmed/18970151pt_BR
dc.date.available2015-11-27T13:02:45Z-
dc.date.accessioned2015-11-27T13:02:45Z-
dc.description.provenanceMade available in DSpace on 2015-11-27T13:02:45Z (GMT). No. of bitstreams: 1 pmed_18970151.pdf: 148971 bytes, checksum: 61cf87a26da016cb2c8446f50d872959 (MD5) Previous issue date: 2005en
dc.identifier.urihttp://repositorio.unicamp.br/jspui/handle/REPOSIP/196566-
dc.identifier.idPubmed18970151pt_BR
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