Junaid, Bushiri M; Wilson, E V; Vaidyan, V K(June , 2010)
[+]
[-]
Abstract:
Urolithiasis is identified to be a major urological disorder affecting people all over the world irrespective of their age, sex and race. Urinary stone samples resected from the urinary bladders of two patients belonging to tropical region, Kollam District of Kerala State, India are investigated by using XRD,SEM, EDAX, TGA, DSC and FTIR to understand its chemical structure. Uric acid shows exothermic peak around 432°C is due to the decomposition with the evolution of CO and cracking of the remaining products. Results of analytical studies reveal that samples under investigation consist mainly in uric acid and hydrated uric acid. Hydrogen bonding exists in hydrated uric acid samples
Description:
Journal of Optoelectronics and Biomedical Materials Vol. 2, Issue 2, June 2010, p. 85 - 90
Junaid, Bushiri M; Wilson, E V; Vaidyan, V K(Elsevier, June 11, 2010)
[+]
[-]
Abstract:
Urinary stones resected from urinary bladders of patients hailing from Kollam district of Kerala State, India
were analyzed by SEM, XRD and by thermal analysis techniques. The analytical results indicate that,
stones have different composition, i.e., calcium phosphate, calcium phosphate hydroxide and sodium
calcium carbonate. Infrared spectral studies also reveal the presence of phosphates or carbonates in
these samples. Further, IR spectral investigations have revealed that amorphous carbonated species are
occupied in PO4 sites in calcium phosphate type stone and OH sites in calcium phosphate hydroxide
sample. Thermal studies of these samples also reveal that, carbon dioxide is released from carbonated
samples upon heating which is related to amount of carbon content and bond strength. Crystals with
defects and irregular morphology are grown inside the urinary bladder due to variation in crystal growth
conditions