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Title:IDENTIFICATION OF MOLECULAR PEAKS OF GALLBLADDER STONE BY MEANS OF PHOTOACOUSTIC SPECTROSCOPY
Author(s):Gazali, Zainab
Contributor(s):Rai, A. K.; RAI, PRADEEP KUMAR; Thakur, Surya Narayan ; KUMAR, ROHIT
Subject(s):Spectroscopy as an analytical tool
Abstract:A novel photoacoustic spectrophotometer (PAS) for study the UV-visible absorption spectrum of gallbladder stone is described. Photoacoustic spectroscopy detects sound waves induced by absorption and periodic heating of a thin layer of gas above a sample placed in a PA cell. This heat results from non-radiative transitions following periodic illumination of the sample. Thus, in the present paper molecular composition of gallbladder stone has been investigated by means of PAS as it does not require any sample preparation. The PA spectrum of gallbladder stone is compared with the UV–Visible absorption spectrum of same gallbladder stone. The presence of cholesterol, calcium carbonate, bile acid and bilirubin in the photoacoustic spectrum, have been directly recognized. The results of this investigation demonstrate that PAS is more suitable to identify the chemical compounds present in gallbladder stones than the conventional absorption spectroscopy.
Issue Date:26-Jun-20
Publisher:International Symposium on Molecular Spectroscopy
Citation Info:APS
Genre:CONFERENCE PAPER/PRESENTATION
Type:Text
Language:English
URI:http://hdl.handle.net/2142/107678
Date Available in IDEALS:2020-06-26


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