Chromatogram

Key Stage 4

Meaning

The chromatogram is on the far right having been produced in a chromatography experiment.

A chromatogram is the result of a chromatography experiment showing the relative distances moved by different chemicals in a sample.

About Chromatograms

Chromatograms can be used to identify chemicals in an unknown mixture by:

• Comparing the chromatogram of a sample to the chromatograms of known chemicals.
• Calculating the Retention Factor (R_f) of the chemicals in the sample and comparing it to known R_f values.

References

AQA

Chromatograms, pages 182-183, GCSE Chemistry; Third Edition, Oxford University Press, AQA

Edexcel

Chromatogram, page 152, GCSE Combined Science, Pearson Edexcel

Chromatogram, page 8, GCSE Chemistry, Pearson, Edexcel

Chromatograms, page 40, GCSE Chemistry; The Revision Guide, CGP, Edexcel

Chromatograms, pages 108, 109, 111, GCSE Chemistry, CGP, Edexcel