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2244035
Gas Chromatography
Description
GCSE Chemistry Mind Map on Gas Chromatography, created by georgialennon on 11/03/2015.
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chemistry
gcse
Mind Map by
georgialennon
, updated more than 1 year ago
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Created by
georgialennon
over 9 years ago
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Resource summary
Gas Chromatography
allows a mixture of compounds to be separated, by their weight
1. sample dissolved in solvent and then injected into an end of the column
2. unreactive gas (nitrogen) carries sample through column
3. dif. substances travel through column at different speeds, and therefore become separated
4. separated substances leave the column, one after another. as they leave, they are detected by detector
long glass tube, packed with solid powdered material, fitted into an oven.
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