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Table 1 List of the theoretical FTIR-ATR peak shift ranges of Amide I, Amide II, Amide III, and carbonyl/carboxyl compounds compared with the absorption maximums for the unaged parchment used in the experiments, and their relative vibrational modes

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

Peak shift ranges (cm−1)
Literature [39,40,41,42,43]
Absorption peak frequency (cm−1) of unaged parchmentVibrational mode
1600–17001635Amide I (AI)
1500–16001552Amide II (AII)
1200–13001239Amide III (AIII)
1720–17501740(C=O)