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
Finnegan mass spectrometer also is mated to a Varian capillary GC.
Joe Keane is getting ready to
analyze a sample on the Hewlett-Packard GC.
Trisha Struebel is preparing to
inject a sample on the Varian GC.
Return to the main instrument page
Proceed to the description of the HPLC
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Last updated October 14, 2004.
The URL for this page is http://www.lycoming.edu/chem/tour/inst7.htm
