Chemical Characterization of Gallstones: An Approach to Explore the Aetiopathogenesis of Gallstone Disease in Sri Lanka
Fig 2
A typical FTIR spectrogram of five gallstone types.
A—Pure cholesterol stone and pale areas of mixed cholesterol stone composed of cholesterol (1465, 1381, and 1056 cm-1). B—Pigmented areas of mixed cholesterol stone composed of calcium bilirubinate (1658, 1631, 1573 and 1249 cm-1), calcium carbonate (1462, 871 and 698 cm-1) and calcium phosphate (1026, 606 and 505 cm-1). C—Pigment stone composed of calcium bilirubinate (1658, 1627, 1566 and 1249 cm-1). D—Pigment stone composed of calcium bilirubinate (1658, 1627, 1566 and 1249 cm-1), calcium carbonate (1450, 694 1658, 1627, 1566 and 1249 cm-1) and calcium phosphate (1080, 1033, 609 and 547 cm-1). E—Pigment stone composed of calcium bilirubinate (1666, 1620, 1573 and 1249 cm-1) and calcium palmitate (2916, 2846, 1543, 1103 and 756 cm-1).