Study of different concentric rings inside gallstones with LIBS
- نوع فایل : کتاب
- زبان : انگلیسی
- مؤلف : Ashok Kumar Pathak & Vivek Kumar Singh & Nilesh Kumar Rai & Awadhesh Kumar Rai & Pradeep Kumar Rai & Pramod Kumar Rai & Suman Rai & G. D. Baruah
- چاپ و سال / کشور: 2011
Description
Gallstones obtained from patients from the northeast region of India (Assam) were studied using laserinduced breakdown spectroscopy (LIBS) technique. LIBS spectra of the different layers (in cross-section) of the gallstones were recorded in the spectral region 200– 900 nm. Several elements, including calcium, magnesium, manganese, copper, silicon, phosphorus, iron, sodium and potassium, were detected in the gallstones. Lighter elements, including carbon, hydrogen, nitrogen and oxygen were also detected, which demonstrates the superiority of the LIBS technique over other existing analytical techniques. The LIBS technique was applied to investigate the evolution of C2 swan bands and CN violet bands in the LIBS spectra of the gallstones in air and an argon atmosphere. The different layers (dark and light layers) of the gallstones were discriminated on the basis of the presence and intensities of the spectral lines for carbon, hydrogen, nitrogen, oxygen and copper. An attempt was also made to correlate the presence of major and minor elements in the gallstones with the common diet of the population of Assam.
Lasers Med Sci (2011) 26:531–537 DOI 10.1007/s10103-011-0886-1 Received: 10 August 2010 / Accepted: 5 January 2011 / Published online: 12 February 2011
