Pigment/binder | Wavenumber (cm−1) | Assignment | Distortion type |
---|---|---|---|
Gum Arabic, polysaccharide | 3350 | ν(O–H) | Derivative |
1604 | δ(O–H) | Derivative | |
1020 | ν(C–O) | Inverted | |
Egg yolk, lipid + proteinaceous | 4399, 4266 | ν + δ(C–H) | |
1740 | ν(C=O) | Derivative | |
Egg white, proteinaceous | 1693 | AI | Derivative |
1560 | AII | Derivative | |
Whole egg, lipid + proteinaceous | 1740 | ν(C=O) | Derivative |
1693 | AI | Derivative | |
1560 | AII | Derivative | |
Natural ultramarine, Na3Ca(Al3Si3O12)S | 2343 | ν3(CO2) | |
≈ 2100 | 2ν(Si–O) | ||
1016 | ν(Si–O) | Inverted | |
French (synthetic) ultramarine, Na3Ca(Al3Si3O12)S | ≈ 2100 | 2ν(Si–O) | |
1022 | ν(Si–O) | Inverted | |
Azurite, Cu3(CO3)2(OH)2 | 4375, 4252 | 3ν3 and ν + δ(O–H) | |
2589, 2550, 2501 | ν1 + ν3 and/or 2ν2 + ν4 | ||
1881 | ν1 + ν4 | ||
1500 | ν3 | Inverted | |
1090 | ν1 | Derivative | |
820 | ν2 | Derivative | |
744 | ν4 | Derivative | |
563, 505 | ν(Cu–O) | Inverted | |
Smalt, Cobalt-bearing silicate glass | ≈2100 | 2ν(Si–O) | |
1083 | ν(Si–O) | Inverted | |
Calcite, CaCO3 | 4268 | 3ν3 | |
≈2514 + 2591 | ν1 + ν3 and/or 2ν2 + ν4 | ||
1796 | ν1 + ν4 | ||
≈ 1560 | ν3 | Inverted | |
≈ 881 | ν2 | Derivative | |
≈ 715 | ν4 | Derivative | |
Lead white (hydrocerussite), Pb3(CO3)2(OH)2 | 4340 | 3ν3 and ν + δ(O–H) | |
3566 | ν(O–H) | Derivative | |
2428 | ν1 + ν3 and/or 2ν2 + ν4 | ||
1740 | ν1 + ν4 | ||
1415 | ν3 | Inverted | |
834 | ν2 | Derivative | |
690 | ν4 | Derivative | |
Gypsum, CaSO4∙2H2O | 5136, 5064 sh | ν1/ν3(O–H) + ν2(O–H) | |
3548, 3500, 3435 | ν(O–H) | Derivative | |
2233 | 2ν3, ν2 + νL H2O | ||
2124 | ν1 + ν3 | ||
1146 | ν3 | Inverted | |
674 | ν4 | Inverted | |
Malachite, Cu2CO3(OH)2 | 4401, 4252 | 3ν3 and ν + δ(O–H) | |
3423 | ν(O–H) | ||
2541, 2422 | ν1 + ν3 and/or 2ν2 + ν4,o | ||
1798 | ν1 + ν4 | ||
1466, 1431 | ν3 | Inverted | |
1081 | ν1 | Derivative | |
952 | δ(O–H) | ||
837 | ν2 | Derivative | |
452 | ν(Cu–O) | Inverted | |
Green earth, K(Mg, Fe2+)(Fe3+, Al)[Si4O10](OH)2 | 3575, 3673 | νO–H | |
≈ 2100 | 2ν(Si–O) | ||
1029 | ν(Si–O) | Inverted | |
Lead–tin yellow, Pb2SnO4 | 569 | ν(Pb2SnO4) | Inverted |
504 | ν(Pb2SnO4) | Inverted | |
459 | ν(Pb2SnO4) | Inverted | |
427 | ν(Pb2SnO4) | Inverted | |
Minium, Pb3O4 | 525 | ν(Pb–O) | Inverted |
435 | ν(Pb–O) | Inverted |