Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/329904
Type: Artigo
Title: Fractionation Of Inorganic Arsenic By Adjusting Hydrogen Ion Concentration
Fractionation of inorganic arsenic by adjusting hydrogen ion concentration
Author: Oliveira, Andrea
Gonzalez, Mario Henrique
Queiroz, Helena Müller
Cadore, Solange
Abstract: The inorganic fraction of arsenic species, iAs = Sigma[As(III) + As(V)] present in fish samples can be quantified in the presence of other arsenic species also found in fishes, such as: monomethylarsonic acid (MMA), dimethylarsinic acid (DMA) and arsenobetaine (AsB). The toxic arsenic fraction was selected taking into account the dissociation constants of these arsenic species in different hydrogen ions concentration leading to the arsine formation from iAs compounds detected as As(III) by HG AAS. For thus, a microwave assisted extraction was carried out using HCl 1 mol L-1 in order to maintain the integrity of the arsenic species in this mild extraction media. Recovery experiments were done for iAs fraction, in the presence of other arsenic species. The recovery values obtained for iAs fraction added were quantitative about 87-107% (for N = 3, RSD <= 3%). The limit of detection (LOD), and the limit of quantification (LOQ), were 5 mu g kg(-1) and 16 mu g kg(-1) respectively. (C) 2016 Elsevier Ltd. All rights reserved.
The inorganic fraction of arsenic species, iAs = ∑[As(III) + As(V)] present in fish samples can be quantified in the presence of other arsenic species also found in fishes, such as: monomethylarsonic acid (MMA), dimethylarsinic acid (DMA) and arsenobetain
Subject: Inorganic Arsenic
Non-chromatographic Separation
Fish Samples
Hydride Generation
Arsênio - Toxicologia
Country: Países Baixos
Editor: Elsevier
Citation: Food Chemistry. Elsevier Sci Ltd, v. 213, p. 76 - 82, 2016.
Rights: Fechado
Identifier DOI: 10.1016/j.foodchem.2016.06.055
Address: https://www.sciencedirect.com/science/article/pii/S0308814616309487
Date Issue: 2016
Appears in Collections:IQ - Artigos e Outros Documentos

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