Table 1 Characteristic FT-IR absorption bands of 3 major gallstone constituents, cm− 1
From: Classification of gallstones using Fourier-transform infrared spectroscopy and photography
Laloum et al. [12] | Kleiner et al. [13] | Gang et al. [19] | Suo et al. [18] | Our study | |
|---|---|---|---|---|---|
Cholesterol | 1467, 1378, 1058 | 3398, 2933, 2866 1463, 1376, 1056 | 3408, 2934, 2867 1446, 1367, 1057 | 3395, 2930, 2867 1464, 1374, 1056 | 3410, 2934, 2853, 1458, 1373, 1055 |
Calcium bilirubinate | 1666, 1628, 1571, 1251 | 1661, 1640, 1575 | 3402, 1696, 1663, 1620, 1572, 1448, 1250, 700 | 1700, 1662, 1628, 1574, 1460, 1253, 1054 | 3398, 1663, 1624, 1566, 1447, 1251, 699 |
Calcium carbonate | 1480, 1419 875, 855 | 1464, 875 | broad band at 1300–1500, 875, 711 | 1464, 1458, 1420, 872, 855 |