Table 4 Raman spectroscopy characteristics of pigments in different colors
Color | Raman shift (cm−1) | Pigment identified | Detection points |
|---|---|---|---|
Black | 1324, 1596 | Carbon black | Number 4 |
Yellow | 1431, 1595, 1627 | Gamboge | Number 7, 8, 9 and 16 |
Blue | 259, 548, 808, 1096, 1355, 1645 | Ultramarine blue | Number 1, 2, 13 &15 |
White | 153, 280, 711, 1048, 1085 | Calcite and lead white | Number 6 and 10 |
Green (Bright) | 106, 119, 152, 172, 216, 240, 291, 323, 370, 431, 492, 538, 681, 755, 842, 950, 1438, 1563 | Emerald green | Number 3 |
Green (Dark) | 176, 217, 278, 369, 536, 952, 1336, 1595, 2093, 2156 | The mixture of prussian blue, emerald green and carbon black | Number 11 |
Red | 121, 151, 223, 314, 389, 548 | Red lead | Number 5, 12 and 14 |