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|Title:||Determination of trace level chemical warfare agents in water and slurry samples using hollow fibre-protected liquid-phase microextraction followed by gas chromatography-mass spectrometry|
|Keywords:||Chemical warfare agents|
Gas chromatography-mass spectrometry
|Citation:||Lee, H.S.N., Basheer, C., Lee, H.K. (2006-08-18). Determination of trace level chemical warfare agents in water and slurry samples using hollow fibre-protected liquid-phase microextraction followed by gas chromatography-mass spectrometry. Journal of Chromatography A 1124 (1-2) : 91-96. ScholarBank@NUS Repository. https://doi.org/10.1016/j.chroma.2006.05.030|
|Abstract:||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 (r2 ≥ 0.995) and limits of detection (LODs) in the range of 0.02-0.09 μg 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 μg l-1, S/N = 3) were obtained. © 2006 Elsevier B.V. All rights reserved.|
|Source Title:||Journal of Chromatography A|
|Appears in Collections:||Staff Publications|
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