BRAINCAKEGas Chromatography
Gas chromatography (GC) separates mixtures of volatile compounds. The mixture must vaporise without decomposing.
The mobile phase is an unreactive carrier gas, such as helium or nitrogen. The stationary phase is usually a liquid with a high boiling temperature, coated as a thin film on a solid support or on the inside wall of a long, thin, coiled column. The column sits inside an oven so that the components stay in the gas phase.
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More in Modern Analytical Techniques
- Precise Molecular Mass
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All 15 lessons in Modern Analytical Techniques · All Edexcel A-level Chemistry topics