Gas Chromatography (GC)

Gas Chromatography (GC) is one of the most effective separation technique known to chemists.  Chromatography is always based on the partitioning of a mixture  between a stationary phase and a mobile phase.  In GC, the mobile phase is a gas (either He or N2) and the stationary phase is some waxy liquid coated within an inert support tube.  Separtion is based on the relative volatilities of the various mixture components (more volatile components travel faster in the gaseous mobile phase).  We use our GC's for reaction monitoring and quantitative work.  The department possesses a Hewlett-Packard 5800 GC and a Varian 3700 GC, both equipped with capillary columns and flame ionization detectors.  The Thermo mass spectrometer also is mated to a Thermo Trace GC.
Joe Keane is getting ready to analyze a sample on the Hewlett-Packard GC.

Return to the main instrument page                    Proceed to the description of the HPLC

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Last updated September 13, 2007.
The URL for this page is http://www.lycoming.edu/chemistrydept/tour/inst7.htm