[Investigation of FTIR spectra analysis of gallstones from Xuzhou region by solvent extraction].

The present paper is a preliminary exploration of the possible way the gallstones are formed. Five categories of gallstones from clinical surgery in Xuzhou region were extracted by a series of solvents. Fourier transform infrared spectroscopy (FTIR) was used to characterize the structure of morphological changes between gallstone and residue by extracting.

[Investigation of FTIR spectra analysis on carbon dioxide absorption with improved amine solution].

Carbon dioxide is a major sort of greenhouse gas as well as important carbon resource. With the developments of industries, emission of carbon dioxide has increased sharply. Hence, controls of carbon dioxide emission and resource transformation have become the hotspot of current study.

[Periodic and fractal precipitation in ATP-Co(2+)-decoxycholate gel system].

In the simulation experiments in vitro of the formation of gallstone, adenosine-triphosphate(ATP)-Co(2+)-deoxycholic acid(DC) gel system was chosen to study the periodic precipitation progress. The effect of ATP on the Co(2+)-DC gel system was also determined, and the structure of the periodic precipitation formed was characterized by FTIR. The results show that the patterns formed in the systems with ATP are different, ATP affected the rate and structure of precipitation through its variable participation in the metal coordination complexes as judged by the phosphate P=O bands and the deoxycholate COO- symmetric and asymmetric vibration bands as measured by FTIR Theses spectroscopic differences were correlated with color and pattern differences in the precipitates.