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gas chromatography
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Close-up view of a coiled glass gas chromatography column mounted in a metal holder.
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Close-up view of a coiled glass gas chromatography column mounted in a metal holder.
gas chromatography Gas chromatography column.

gas chromatography

chemistry
Also known as: GC
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Britannica Editors
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gas chromatography, in analytical chemistry, technique for separating chemical substances in which the sample is carried by a moving gas stream through a tube packed with a finely divided solid that may be coated with a film of a liquid. Because of its simplicity, sensitivity, and effectiveness in separating components of mixtures, gas chromatography is one of the most important tools in chemistry. It is widely used for quantitative and qualitative analysis of mixtures, for...

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