Microanalysis of Organic Pigments in Ancient Textiles by Surface-Enhanced Raman Scattering on Agar Gel Matrices

Table 1

Change in color (CIE system) of the cotton mockup dyed with alizarin upon extraction with the Ag-agar gel added with either ethanol or disodium-EDTA solution.

	Before			After
Ethanol; 15 minutes	44.39	45.73	21.02	0.06	−0.04	−0.03	0.08
Disodium-EDTA; 30 minutes	45.08	45.9	20.8	0.08	−0.03	−0.04	0.09