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Type: Artigo de periódico
Title: Hydride generation using a metallic atomizer after microwave-assisted extraction for inorganic arsenic speciation in biological samples
Author: Lehmann, EL
Fostier, AH
Arruda, MAZ
Abstract: The present speciation method reports the determination of inorganic arsenic forms, using metallic furnace hydride generation atomic absorption spectrometry. The inorganic As speciation is carried out using mild conditions for hydride formation, such as slightly acid pH media (4.50) and low tetrahydridoborate(1-) concentration (0.1% (w/v)). Limits of detection and quantification of 2.0 and 6.6 mu g L-1 of iAs(III) are obtained using optimized conditions. Additionally, microwave-assisted extraction using water as solvent is carried out to provide the appropriate environment for As species extraction as well as impeding inter-conversion between species. With these analytical strategies, As was accurately determined (at 99.9% confidence level) in water and plankton samples. (C) 2012 Elsevier B.V. All rights reserved.
Subject: Speciation analysis
Mild conditions
Hydride generation
Sample preparation
Country: Holanda
Editor: Elsevier Science Bv
Citation: Talanta. Elsevier Science Bv, v. 104, n. 187, n. 192, 2013.
Rights: fechado
Identifier DOI: 10.1016/j.talanta.2012.11.009
Date Issue: 2013
Appears in Collections:Unicamp - Artigos e Outros Documentos

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