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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 2:20 |
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Conference: Bucharest University Faculty of Physics 2010 Meeting
Section: Nuclear and Elementary Particles Physics
Title:
Trace Element Distribution In Human Teeth By X-Ray Fluorescence And Multivariate Analysis
Authors:
C. Oprea (1), P. J. Szalanski (2), M. V. Gustova (3), A. I. Oprea (1), V. Buzguta (4)
Affiliation:
(1)Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, 141980 Dubna, RF
(2)Faculty of Physics and Applied Informatics, Lodz University, Lodz, Poland
(3)Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research, 141980 Dubna, R
(4)Bucharest State University, 76900 Bucharest, Romania
Faculty of Sciences, University of Oradea, 3700 Oradea, Romania
E-mail
coprea2007@yahoo.co.uk, istina@nf.jinr.ru
Keywords:
human teeth, XRFS, elemental concentration, multivariate analysis, factor analysis
Abstract:
X-ray fluorescence spectrometry (XRFS) was used as a multielement method of evaluation of individual whole human tooth or tooth tissues for their amounts of trace elements. Measurements were carried out on human enamel, dentine, and dental cementum, and significant differences in tooth matrix composition were noted. In addition, the elemental concentrations determined in teeth from subjects of different ages, nutritional states, professions and gender, living under various environmental conditions and dietary habits, were included in a comparison by multivariate statistical analysis (MVSA) methods. By factor analysis it was established that inorganic components of human teeth varied consistently with their source in the tissue, with more in such tissue from females than in that from males, and more in tooth incisor than in tooth molar. The heavy metal concentrations in the tissue did not varied greatly from dentine to enamel or to dental cementum, whatever the age and occupation of the subject. The statistical analyses performed seem to indicate that deciduous teeth might be a suitable indicator of environmental exposure to several trace elements. The results demonstrated that XRFS supplemented by MVSA is an useful and practical approach for the investigation of trace heavy metal incorporation and distribution on the surface of teeth as well as in inner layers. The features of the approach applied to environmental monitoring are also discussed.
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