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Table 1 Major infrared band assignments for modelling clay samples from Dwyer artworks

From: Modelling clay materials used in artworks: an infrared spectroscopic investigation

Wavenumber/cm−1 Band assignments References
712 CaCO3 C–O bending [6,7,8,9]
717, 728 Paraffin C–H rocking [10, 11, 13, 14]
849, 872 CaCO3 C–O bending [6,7,8,9]
1030 Oxidation products C–O stretching [17, 23]
1190 Oxidation products C–C stretching [17, 23]
1367, 1378 Paraffin C–H bending [10, 11, 13, 14]
1414 CaCO3 C–O stretching [6,7,8,9]
1463, 1470 Paraffin C–H bending [10, 11, 13, 14]
1720, 1730 Oxidation products C=O stretching [16,17,18]
1790 CaCO3 C=O stretching [6,7,8,9]
2520 CaCO3 overtone/combination band [7, 8]
2847, 2874, 2916, 2950 Paraffin C–H stretching [10, 11, 13, 14]