Enhanced Selectivity and Sensitivity for Flow Injection Spectrophotometric Determination of Cobalt Using Solid Phase Extraction with a 2D Ion-Imprinted Adsorbent

dc.creatorTarley, CRT
dc.creatorFernandes, FF
dc.creatorLuccas, PO
dc.creatorSegatelli, MG
dc.date2011
dc.date2014-07-30T17:19:42Z
dc.date2015-11-26T17:47:40Z
dc.date2014-07-30T17:19:42Z
dc.date2015-11-26T17:47:40Z
dc.date.accessioned2018-03-29T00:30:21Z
dc.date.available2018-03-29T00:30:21Z
dc.identifierAnalytical Letters. Taylor & Francis Inc, v. 44, n. 41699, n. 216, n. 231, 2011.
dc.identifier0003-2719
dc.identifierWOS:000287494700017
dc.identifier10.1080/00032719.2010.500756
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/64844
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/64844
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1288852
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionThe present work reports the effectiveness of a 2D imprinting method based on a surface imprinting technique for the development of a selective and sensitive flow sorbent preconcentration system for Co2+ ion determination. Cobalt ions were determined by UV-vis spectrophotometry exploiting the complexation with 1-(2-piridylazo)-2-naphtol (PAN). Based on a coefficient of relative selectivity (k'), the ion-imprinted amino-functionalized silica gel sorbent (ISG), compared with modified but non-imprinted sorbent (MSG) and silica gel (SG), showed a very high selectivity. A limit of detection of 0.51 mu g L-1 and precision (n=10) as a relative standard deviation of 2.63 and 1.50% for Co2+ concentration of 10.0 and 90.0 mu g L-1, respectively, were achieved. A comparison of the proposed method with other previously published methods shows advantages in terms of sample consumption, sample throughput, and limit of detection. The application of the present method was successfully performed for the direct determination of Co2+ content in urine and environmental water samples without any interference and without sample preparation, with satisfactory results.
dc.description44
dc.description41699
dc.description216
dc.description231
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.languageen
dc.publisherTaylor & Francis Inc
dc.publisherPhiladelphia
dc.publisherEUA
dc.relationAnalytical Letters
dc.relationAnal. Lett.
dc.rightsfechado
dc.rightshttp://journalauthors.tandf.co.uk/permissions/reusingOwnWork.asp
dc.sourceWeb of Science
dc.subject2D imprinting method
dc.subjectCobalt
dc.subjectSolid phase extraction
dc.subjectSpectrophotometry
dc.subjectSurface imprinting technique
dc.subjectSilica-gel
dc.subjectTrace Cobalt
dc.subjectPreconcentration
dc.subjectSeparation
dc.subjectPolymers
dc.subjectSorbent
dc.subjectCopper
dc.subjectPair
dc.titleEnhanced Selectivity and Sensitivity for Flow Injection Spectrophotometric Determination of Cobalt Using Solid Phase Extraction with a 2D Ion-Imprinted Adsorbent
dc.typeArtículos de revistas


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