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Bulk functional group distribution of green and red snow.
| Green snow (%) | Red snow (%) | |
|---|---|---|
| Lipids | 7.21 | 11.41 |
| Proteins | 38.72 | 19.64 |
| Carbohydrates | 54.08 | 68.96 |
Main functional groups representing the lipids (CH2 and CH3 stretching modes between 3050 and 2800 cm-1), proteins (amide I and II bands at 1700–1500 cm-1) and carbohydrates (C–O–C, C–O–P, P–O–P ring vibrations between 1204–815 cm-1) are reported as percentage of total functional groups.
