Table 4 FTIR spectral peak positions and relative contents of the ancient leather
From: Quantitative assessment of hardened leather artifact deterioration using infrared spectroscopy
Ancient samples | α-helix | Random coil | β-sheet | |||
|---|---|---|---|---|---|---|
Frequency/cm−1 | Content/% | Frequency/cm−1 | Content/% | Frequency/cm−1 | Content/% | |
Old1 | 1274 | 1.36 | 1250 | 8.69 | 1234 | 20.56 |
Old2 | 1280,1294 | 6.39 | 1245, 1263 | 26.81 | 1230 | 13.41 |
Old3 | 1279 | 11.43 | 1255 | 18.75 | 1237 | 36.54 |
