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Heritage Science
Fig. 5 | Heritage Science

Fig. 5

From: Poisonous books: analyses of four sixteenth and seventeenth century book bindings covered with arsenic rich green paint

Fig. 5

a Raman spectra focused on the large yellow crystals on the samples from the four books in the range 450–100/cm, showing the characteristic lines of orpiment with yellow circles; b Raman spectra focused on the green/blue matrix in the range 2000–100/cm, the blue circles show the positions of the characteristic lines of indigo. For sample KLR-11920/Herlufsholm 768.6 is also seen orpiment besides indigo

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