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Abstract
A reversed phase HPLC method has been developed for the identification and quantification of madder applied to an old textile. An isocratic method was used for the identification of alizarin and purpurin, the main pigments in the madder plant, which were identified and quantified in cotton and wool reference samples and in the unknown textile.
FTIR-spectroscopy was also used for the identification of pigment and fiber of the unknown sample.
Notes
1: plant.
2: reference wool sample dyed with madder (known sample).
3: reference cotton sample dyed with madder.
4: old textile (unknown sample).
o.m.f. = on the mass of the fiber.
