Fig. 5

Fitzwilliam Museum, MS MCClean 20, fol 20v (a). ER-FTIR spectra collected on the pink robe (T1, purple spectrum in b), the light blue robe (T3, blue spectrum in b) and the green column (c). Characteristic bands for a lipidic binder, lead white, natural ultramarine and atacamite are shown; the pigment’s overtones and/or combination bands are labeled with o(functional group or compound)