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1
Process Gas Chromatography – General Introduction
Analytical Principle
1.1
The analytical principle is shown in
:
fig. 1-1
fig. 1-1 Principle of a Gas Chromatography
A very small volume of sample gas (typically much less than 1 ml), which is a mixture of several components, is injected
into a stream of carrier gas, which takes the sample gas through the column. This column acts as a separator through
the difference in absorption rate of the different components of the sample gas, they are separated from each other
during their passage through the column and elute as individual components. The concentration of each component is
then measured at the end of the column by a detector. From the knowledge of the concentrations of each component,
any property of the gas can be calculated.
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EnCal 3000 Quad– Hardware Manual
16/09/2014
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