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Fig. 1 | Heritage Science

Fig. 1

From: Studies on the effects of mixed light-thermal ageing on parchment by vibrational spectroscopy and micro hot table method

Fig. 1

FTIR-ATR spectra of PUV1 (grain side) and PUV2 (corium side) parchment samples exposed to artificial ageing for a maximum of 748 h. Amide I and Amide II appear shifted and with progressively lower absorption intensity. Amide III shows progressively lower absorption intensity as well. The shoulder-type band at 1740 cm−1 occurs after 12 h of artificial ageing

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