Figure 4: Raman spectra for chl a (left) and chl b (right) in different solvents (1)acetone (2) hexaneacetone, 90: 1Ov/v (3) Chl a: dry hexane (3) Chl b: dry cyclohexane (4) dry carbon tetrachloride (5) water aggregates in Nujol oil [35].