title: [Microprobe study of bones in the determination of individual age].
abstract: Potassium and phosphorus levels and the Ca: P ratio were determined in autopsy material taken from the compact bone substance of the right femur of 25 individuals of various age and either sex. Studies were made under a Tesla BS-300 scanning electron microscope connected to an EDAX-149-10 X-ray detector and a BMG-38100 X-ray analyser using 15 kV accelerating voltage, 100 pA test-current and 20 s measuring time. Different bone substances (lamellae, Haversian canals, interstitial bone) showed similatr Ca: P ratios (p greater than 0.05). However, mean mol-ratio was found to decrease with age and this was still significant (p greater than 0.05) at 95% level. The equation of the regression line was: y = -0.0013x + 1.8275, where y represents Ca: P ratio x the age. There was a close correlation between the molar ratio of Ca and P which enables this method to be applied for the assessment of individual age in forensic medicine and paleoanthropology.
authors: F
authors: F
authors: Kósa
authors: I
authors: I
authors: Farkas
authors: G
authors: G
authors: Wittman
mesh_terms: D000365:Age Determination by Skeleton; D000375:Aging; D001842:Bone and Bones / Q000032:analysis / Q000648:ultrastructure*; D002113:Calcification, Physiologic; D002118:Calcium / Q000032:analysis; D005554:Forensic Medicine; D006801:Humans; D006814:Hungary; D008855:Microscopy, Electron, Scanning / Q000295:instrumentation; D010758:Phosphorus / Q000032:analysis; D013053:Spectrophotometry / Q000295:instrumentation
chemical_list: D010758:Phosphorus; D002118:Calcium
vernacular_title: A csontok elektronmikroszondás vizsgálata az individuális életkor megállapítására.