| Literature DB >> 20396652 |
Araceli Hernandez-Zavala1, Zuzana Drobna, Miroslav Styblo, David J Thomas.
Abstract
Quantitation of iAs and its methylated metabolites in biological samples provides dosimetric information needed to understand dose-response relations. Here, methods are described for separation of inorganic and mono-, di-, and trimethylated arsenicals by thin layer chromatography. This method has been extensively used to track the metabolism of the radionuclide [(73)As] in a variety of in vitro assay systems. In addition, a hydride generation-cryotrapping-gas chromatography-atomic absorption spectrometric method is described for the quantitation of arsenicals in biological samples. This method uses pH-selective hydride generation to differentiate among arsenicals containing trivalent or pentavalent arsenic.Entities:
Keywords: [73As]; arsenic; arsenic oxidation state; hydride generation-cryotrapping-gas chromatography-atomic absorption spectrometry; methylated arsenicals; pH-selective hydride generation; thin layer chromatography
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Year: 2009 PMID: 20396652 PMCID: PMC2853037 DOI: 10.1002/0471140856.tx0433s42
Source DB: PubMed Journal: Curr Protoc Toxicol ISSN: 1934-9254