Gas Chromatography

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GC - Instrumental componentsCarrier gasThe carrier gas must be chemically inert.Commonly used gases include nitrogen, helium, argon, and carbondioxide.The choice of carrier gas is often dependant upon the type of detectorwhich is used.The carrier gas system also contains a molecular sieve to removewater and other impurities.

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GC – General Technique<strong>Gas</strong> chromatography involves a sample being vaporized and injected onto thehead of the chromatographic column. The sample is transported through thecolumn by the flow of inert, gaseous mobile phase. The column itself contains aliquid stationary phase which is adsorbed onto the surface of an inert solid.Schematic diagram of a gas chromatograph:

Page 1: Gas ChromatographyGas-liquid chroma
Page 5 and 6: GC - Instrumental componentsPacked
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Page 9: How are the components of the mixtu

Gas Chromatography

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