Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/99367
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dc.contributor.CRUESPUNIVERSIDADE DE ESTADUAL DE CAMPINASpt_BR
dc.typeArtigo de periódicopt_BR
dc.titleSelective Spectrophotometric Determination Of Trace Amounts Of Chromium(vi) Using A Flow Injection System With A Microcolumn Of Zirconium(iv) Oxide Modified Silica Gelpt_BR
dc.contributor.authorPeixoto C.R.M.pt_BR
dc.contributor.authorGushikem Y.pt_BR
dc.contributor.authorBaccan N.pt_BR
unicamp.authorPeixoto, C.R.M., Instituto de Quimica, Unicamp, CP 6154, 13081 Campinas, São Paulo, Brazilpt_BR
unicamp.authorGushikem, Y., Instituto de Quimica, Unicamp, CP 6154, 13081 Campinas, São Paulo, Brazilpt_BR
unicamp.authorBaccan, N., Instituto de Quimica, Unicamp, CP 6154, 13081 Campinas, São Paulo, Brazilpt_BR
dc.description.abstractZirconium(IV) oxide coated on a silica gel surface was found to be very effective for extracting CrVI from aqueous solutions at a pH of about 3. A microcolumn packed with this material was inserted into a flow injection system for the separation and preconcentration of CrVI. By this process, a concentration level of 2 ppb was detected with a relative standard deviation of 2.4%. Because of the high selectivity of the immobilized substrate, it was possible to determine CrVI in the presence of larger amounts of other ions. The analysis was also carried out on natural water spiked with CrVI, and compared with a standard method.en
dc.relation.ispartofThe Analystpt_BR
dc.date.issued1992pt_BR
dc.identifier.citationThe Analyst. , v. 117, n. 6, p. 1029 - 1032, 1992.pt_BR
dc.language.isoenpt_BR
dc.description.volume117pt_BR
dc.description.issuenumber6pt_BR
dc.description.firstpage1029pt_BR
dc.description.lastpage1032pt_BR
dc.rightsabertopt_BR
dc.sourceScopuspt_BR
dc.identifier.issn32654pt_BR
dc.identifier.doipt_BR
dc.identifier.urlhttp://www.scopus.com/inward/record.url?eid=2-s2.0-0000874372&partnerID=40&md5=409769dd5af2b9d71272b1ef1a69fa51pt_BR
dc.date.available2015-06-30T14:20:33Z
dc.date.available2015-11-26T14:42:48Z-
dc.date.accessioned2015-06-30T14:20:33Z
dc.date.accessioned2015-11-26T14:42:48Z-
dc.description.provenanceMade available in DSpace on 2015-06-30T14:20:33Z (GMT). No. of bitstreams: 1 2-s2.0-0000874372.pdf: 428459 bytes, checksum: 70c8378373fa01987bff2e46e1fb43c5 (MD5) Previous issue date: 1992en
dc.description.provenanceMade available in DSpace on 2015-11-26T14:42:48Z (GMT). No. of bitstreams: 1 2-s2.0-0000874372.pdf: 428459 bytes, checksum: 70c8378373fa01987bff2e46e1fb43c5 (MD5) Previous issue date: 1992en
dc.identifier.urihttp://www.repositorio.unicamp.br/handle/REPOSIP/99367
dc.identifier.urihttp://repositorio.unicamp.br/jspui/handle/REPOSIP/99367-
dc.identifier.idScopus2-s2.0-0000874372pt_BR
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