title: An attempt at kidney stone analysis with the application of synchrotron radiation.
abstract: X-ray absorption near-edge spectroscopy (XANES) is a spectroscopic technique using synchrotron light to determine the valence state of excited atoms as well as the electronegativity of their neighbouring atoms. XANES spectra can provide information about the chemical bond in the second coordination shell of the excited atom. In this study, XANES spectra of unknown compounds from human kidney stones were recorded around the K-edges of sulfur, phosphorus and calcium. The XANES results agree well with the diffractogram data of the same stones obtained through an X-ray powder diffraction (XRPD) technique. By comparing the measurement techniques presented here, it is shown that XANES requires a smaller amount of each sample than XRPD for analysis.
authors.affiliation: College of Medicine and Public Health, Ubon Rajathanee University, Warinchamrap, Ubon Ratchathani 34190, Thailand. jaruwan_siritape@yahoo.com
authors.forename: Jaruwan
authors.initials: J
authors.lastname: Siritapetawee
authors.forename: Wanwisa
authors.initials: W
authors.lastname: Pattanasiriwisawa
mesh_terms: D015502:Absorptiometry, Photon; D006801:Humans; D007669:Kidney Calculi / Q000737:chemistry*; D017356:Synchrotrons; D014961:X-Ray Diffraction / Q000379:methods