Chemistry A-Level
gas chromatography
What gas chromatography means in Chemistry A-Level, as defined for AQA.
Definition of gas chromatography
Check what you remember
Read the wording for your board, then hide it and explain gas chromatography in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
A column is packed with a solid or with a solid coated by a liquid, and a gas is passed through the column under pressure at high temperature.
Topics that use gas chromatography
- Chromatography (A-level only) (AQA A-Level)
Related terms
- adsorption
- fragmentation fingerprint
- gas chromatography with mass spectrometry
- lid and saturated vapour
- molecular ion peak
- pencil baseline
- retention time
- Rf value
Using gas chromatography in the exam
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