Arsenic speciation in some environmental samples: a comparative study of HG-GC-QFAAS and HPLC-ICP-MS methods

• Published in: Applied organometallic chemistry Vol. 14; no. 8; pp. 401 - 410
• Main Authors: Guerin, T., Molenat, N., Astruc, A., Pinel, R.
• Format: Journal Article
• Language: English
• Published: Chichester, UK John Wiley & Sons, Ltd 01.08.2000; Wiley; Wiley-Blackwell
• Subjects: Analysis methods; Analytical chemistry; Applied sciences; arsenic speciation liquid chromatography; Chemical Sciences; environmental samples; Exact sciences and technology; gas chromatography-atomic absorption; mass spectroscopy; Natural water pollution; Pollution; Soil and sediments pollution; Water treatment and pollution; Chemical analysis; Coupled method; Liquid chromatography; Soil pollution; Inductive coupling plasma spectrometry; Gas chromatography; Pollutant; Arsenic Compounds; Urban waste water; Water pollution; Mass spectrometry; Arsenic Organic compounds; Speciation; Atomic absorption spectrometry; Mass spectroscopy; Environmental samples; Arsenic speciation liquid chromatography; Gas chromatography-atomic absorption
• ISSN: 0268-2605; 1099-0739
• DOI: 10.1002/1099-0739(200008)14:8<401::AID-AOC21>3.0.CO;2-Y

Some water and soil extracts polluted with arsenic, and a sewage sludge certified for total arsenic have been analysed by high‐performance liquid chromatography–inductively coupled plasma–mass spectrometry (HPLC–ICP–MS) and hydride generation–gas chromatography– quartz furnace atomic absorption spectrometry (HG–GC–QFAAS techniques.) Detection limits in the range of 200–400 and 2–10 ng l−1 respectively allowed the determination of inorganic [As(III), As(V)] and methylated (DMA, MMA, TMAO) arsenic species present in these samples. Results obtained by both methods are well correlated overall, whatever the arsenic chemical form and concentration range (8–10 000 μg l−1). Comparison of these results enabled us to point out features and disadvantages of each analytical method and to reach a conclusion that they are suitable for arsenic speciation in these environmental matrices. Copyright © 2000 John Wiley & Sons, Ltd.