Journal
JOURNAL OF CHROMATOGRAPHY A
Volume 1124, Issue 1-2, Pages 91-96Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.chroma.2006.05.030
Keywords
hollow fibre; liquid-phase microextraction; chemical warfare agents; gas chromatography-mass spectrometry
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A simple and solvent-minimised sample preparation technique based on hollow fibre-protected liquid-phase microextraction was investigated for the gas chromatography/mass spectrometric analysis of chemical warfare agents in water and slurry samples. The chemical warfare agents included four nerve agents and a blister agent. Parameters such as extraction solvent, salt concentration, stirring speed and extraction time were optimised using spiked deionised water samples. The technique provided a linear range of two orders of magnitude, good repeatability (RSDs < 10%, n = 6), good linearity (r(2) >= 0.995) and limits of detection (LODs) in the range of 0.02-0.09 mu g l(-1) (S/N = 3) under full scan mode. The optimised technique was also applied to more complex slurry samples and similar precision (RSD < 15%, n = 3) and limits of detection (0.02-0.2 mu g l(-1), S/N = 3) were obtained. (c) 2006 Elsevier B.V. All rights reserved.
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