期刊
JOURNAL OF CHROMATOGRAPHY A
卷 1025, 期 1, 页码 71-75出版社
ELSEVIER
DOI: 10.1016/j.chroma.2003.07.004
关键词
cold-vapour atomic fluorescence spectrometry; atomic fluorescence spectrometry; detection; GC; headspace analysis; methylmercury; organomercury compounds
Improvements in the methylmercury extraction from human hair by solid-phase microextraction followed by gas chromatography coupled to cold-vapour atomic fluorescence spectrometry (GC-CVAFS) have been carried out. They consisted in the optimisation of the digestion step prior to the aqueous-phase ethylation and in the GC-CVAFS interface set-up. The main digestion parameters such as acid type, concentration, temperature and time have been optimised for hair sample analysis, thereby avoiding methylmercury degradation. Moreover, the stability of the digested samples was evaluated to improve the sample throughput. (C) 2003 Elsevier B.V. All rights reserved.
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