Campo DC | Valor | Idioma |
dc.contributor.author | Amorim, Fábio Alan Carqueija | - |
dc.contributor.author | Bezerra, Marcos de Almeida | - |
dc.creator | Amorim, Fábio Alan Carqueija | - |
dc.creator | Bezerra, Marcos de Almeida | - |
dc.date.accessioned | 2014-09-09T16:03:54Z | - |
dc.date.issued | 2007 | - |
dc.identifier.issn | 0026-3672 | - |
dc.identifier.uri | http://repositorio.ufba.br/ri/handle/ri/15989 | - |
dc.description | Texto completo: acesso restrito. p. 183-189 | pt_BR |
dc.description.abstract | A system has been developed for online preconcentration and determination of Cd using thermospray flame furnace atomic absorption spectrometry (TS-FF-AAS). It is based on the solid-phase extraction of Cd in an Amberlite XAD-2 minicolumn loaded with 2-(2-thiazolylazo)-5-dimethylaminophenol (TAM), and the metal ion is eluted with 1 mol L−1 hydrochloridric acid, followed by its determination. The online system allows determining Cd with a detection limit of 8.0 ng L−1 and a quantification limit of 25.0 ng L−1. The precision (repeatability), calculated as the relative standard deviation (% RSD) in sample solutions containing 0.5 and 3.0 µg L−1 of Cd, was 6.1 and 4.5%, respectively. The preconcentration factor obtained was 24. The system’s accuracy was confirmed by analyzing the following certified reference materials (CRMs): Rice flour NIES 10b, Apple leaves NIST 1515 and Orchard leaves NBS 1571. This procedure was applied to the determination of Cd in cabbage and powdered guarana samples. | pt_BR |
dc.language.iso | en | pt_BR |
dc.rights | Acesso Aberto | pt_BR |
dc.source | http://dx.doi.org/10.1007/s00604-006-0713-8 | pt_BR |
dc.subject | TS-FF-AAS | pt_BR |
dc.subject | Cd determination | pt_BR |
dc.subject | Vegetal samples | pt_BR |
dc.title | Online preconcentration system for determining ultratrace amounts of Cd in vegetal samples using thermospray flame furnace atomic absorption spectrometry | pt_BR |
dc.title.alternative | Microchimica Acta | pt_BR |
dc.type | Artigo de Periódico | pt_BR |
dc.identifier.number | v. 159, n. 1-2 | pt_BR |
dc.embargo.liftdate | 10000-01-01 | - |
Aparece nas coleções: | Artigo Publicado em Periódico (ICADS)
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