Use of sugar cane bagasse as solid phase extractor for cadmium determination by FAAS

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dc.contributor.authorLima Borges, Elisangela Cardoso
dc.contributor.authorde Oliveira, Adriana Paiva
dc.contributor.authorde Moraes, Mercedes
dc.contributor.authorGomes Neto, Jose Anchieta
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:21:08Z
dc.date.available2014-05-20T15:21:08Z
dc.date.issued2006-09-01
dc.description.abstractThe present paper describes the use of sugar cane bagasse as solid phase extractor for cadmium determination after complexation of the analyte with ammonium diethyldithiophosphate (ADDP) and sorption of the Cd-DDP complexes on the solid support. The concomitants were separated using a flow injection analysis (FIA) system coupled to flame atomic absorption spectrometry (FAAS) for determination. The main parameters such as ADDP concentration, acid medium, flow rate, reaction coil length, and reaction time were investigated.The results obtained with HNO3 showed good accuracy and precision. The enhancement factor was 20.5 times for a 120-second preconcentration time, and the analytical frequency was 25 determinations per hour. The calibration curve was linear over the concentration range of 1-40 mu g L-1 Cd with a LOD of 0.697 mu g L-1 Cd and a relative standard deviation of 0.96% after 12 successive measurements of 30 mu g L-1 Cd.The proposed method was evaluated for the FIA-FAAS analysis of certified reference materials (tomato leaves, spinach leaves, and bovine liver) and Cd-spiked foods (shrimp, sardine, tuna, chicken liver and bovine liver). Good recoveries (80.0-97.1%) for the Cd-spiked samples and certified reference materials were obtained. The results of bagasse-packed minicolumns were compared with Si-C,8 packed minicolumns. The F-test was applied between Si-C-18/Bagasse minicolumns, Si-C-18/certified values, and bagasse/certified values. It was found that the results were in agreement with the certified values at a 95% confidence level.en
dc.description.affiliationUniv Estadual Paulista, UNESP, Inst Quim, BR-14801970 Araraquara, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, UNESP, Inst Quim, BR-14801970 Araraquara, SP, Brazil
dc.format.extent139-145
dc.identifier.citationAtomic Spectroscopy. Shelton: Perkin-elmer Corp, v. 27, n. 5, p. 139-145, 2006.
dc.identifier.issn0195-5373
dc.identifier.urihttp://hdl.handle.net/11449/32307
dc.identifier.wosWOS:000242509800001
dc.language.isoeng
dc.publisherPerkin-elmer Corp
dc.relation.ispartofAtomic Spectroscopy
dc.relation.ispartofjcr1.123
dc.relation.ispartofsjr0,327
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.titleUse of sugar cane bagasse as solid phase extractor for cadmium determination by FAASen
dc.typeArtigo
dcterms.rightsHolderPerkin-elmer Corp

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