Please use this identifier to cite or link to this item: https://repositorio.ufba.br/handle/ri/6042
metadata.dc.type: Artigo de Periódico
Title: On-line preconcentration using a resin functionalized with 3,4-dihydroxybenzoic acid for the determination of trace elements in biological samples by thermospray flame furnace atomic absorption spectrometry
Other Titles: Journal of Hazardous Materials
Authors: Lemos, Valfredo Azevedo
Bezerra, Marcos de Almeida
Amorim, Fábio Alan Carqueija
metadata.dc.creator: Lemos, Valfredo Azevedo
Bezerra, Marcos de Almeida
Amorim, Fábio Alan Carqueija
Abstract: In the present paper, an on-line preconcentration procedure for determination of cadmium, copper and zinc by thermospray flame furnace atomic absorption spectrometry (TS-FF-AAS) is proposed. Amberlite XAD-4 functionalized with 3,4-dihydroxybenzoic acid (XAD4-DHB) packed in a minicolumn was used as sorbent material. The metals were retained on the XAD-DHB resin, from which it could be eluted directly to the thermospray flame furnace system. The detection limits were 28 (Cd), 100 (Cu) and 77 ng L−1 (Zn) for 60 s preconcentration time, at a sample flow rate of 7.0mLmin−1. Enrichment factors were 102, 91 and 62, for cadmium, copper and zinc, respectively. The procedure has been applied successfully to metal determination in biological standard reference materials. © 2008 Elsevier B.V. All rights reserved.
Keywords: Cadmium
Copper
Zinc
Preconcentration
Solid-phase extraction
URI: http://www.repositorio.ufba.br/ri/handle/ri/6042
Issue Date: 2008
Appears in Collections:Artigo Publicado em Periódico (Química)

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