title: XANES analysis of dried and calcined bones.
abstract: The structure of dried and calcined bones from chicken, bovine, deer, pig, sheep and chamois was examined using X-ray Absorption Near Edge Structure (XANES) spectroscopy. The oxygen K-edge absorption edge indicates that the surface of dried bone has a larger proportion of carbonate than the interior that is made up of phosphates. The phosphorus L and K edge clearly indicate that pyrophosphates, α-tricalcium phosphate (α-TCP) and hydrogen phosphates of Ca do not exist in either the dried bone or calcined bone and phosphorus exists as either β-tricalcium phosphate (β-TCP) or hydroxyapatite, both in the dried and calcined conditions. The Ca K-edge analysis indicates that β-TCP is the likely form of phosphate in both the dried and calcined conditions.
authors.affiliation: Materials Science and Engineering Department, University of Texas at Arlington, USA.
authors.forename: Jayapradhi
authors.initials: J
authors.lastname: Rajendran
authors.forename: Stefano
authors.initials: S
authors.lastname: Gialanella
authors.forename: Pranesh B
authors.initials: PB
authors.lastname: Aswath
mesh_terms: D000818:Animals; D001842:Bone and Bones / Q000737:chemistry*; D002118:Calcium / Q000032:analysis; D002417:Cattle; D003890:Desiccation / Q000379:methods*; D004583:Electrons; D005453:Fluorescence; D010100:Oxygen / Q000032:analysis; D010758:Phosphorus / Q000032:analysis; D011208:Powders; D034421:Sus scrofa; D013696:Temperature; D056928:X-Ray Absorption Spectroscopy; D014961:X-Ray Diffraction
chemical_list: D011208:Powders; D010758:Phosphorus; D010100:Oxygen; D002118:Calcium
keywords: Bone; Calcination; Calcium phosphates; X-ray Absorption Near Edge Structure Spectroscopy