Volatile enrichment on automatic static headspace using a precolumn and stopping the carrier gas flow during injection
作者:
Robertino Barcarolo,
Pierino Casson,
期刊:
Journal of High Resolution Chromatography
(WILEY Available online 1995)
卷期:
Volume 18,
issue 1
页码: 5-8
ISSN:0935-6304
年代: 1995
DOI:10.1002/jhrc.1240180103
出版商: Wiley Subscription Services, Inc., A Wiley Company
关键词: Static headspace;Reconcentration;Precolumn;Carrier gas flow stop;Volatile components
数据来源: WILEY
摘要:
AbstractThe aim of this study was to develop a technique for performing automatic static headspace analysis of volatiles without a cryogenic device. Reconcentration of solutes was accomplished using a graphitized carbon coated precolumn between two splitting points and stopping carrier gas flow during injection. Chromatographic profiles of volatile compounds from ground coffee compared with split and splitless injections provide confirmation of the good sensitivity of the technique. The analysis of a standard mixture covering a wide range of volatility confirms that the described technique might be useful to achieve enrichement of low volatile headspace compounds, even if discrimination against the various components is present.
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