Analysis and discussion of trace elements in teeth of different animal species
| Autor: | A. Quinelato, M. D. L. Barbosa, Michel Nicolau Youssef, Roberto Adrian Markarian, Marcia de Almeida Rizzutto, Manfredo Harri Tabacniks, F Falla-Sotelo, Nemitala Added, Matsuyoshi Mori |
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| Jazyk: | angličtina |
| Rok vydání: | 2005 |
| Předmět: | |
| Zdroj: | Brazilian Journal of Physics, Volume: 35, Issue: 3b, Pages: 761-762, Published: SEP 2005 Scopus-Elsevier Brazilian Journal of Physics v.35 n.3b 2005 Brazilian Journal of Physics Sociedade Brasileira de Física (SBF) instacron:SBF |
| Popis: | Human, bovine and swine teeth were analyzed by Proton Induced X-ray Emission (PIXE). The aim of this work was to determine the concentration of trace elements in enamel and dentine of different animal species. PIXE analysis was carried out at the Laboratório de Análise de Materiais por Feixes Iônicos da USP (LAMFI) using a 2.4 MeV proton beam to probe the samples. Healthy teeth from São Paulo region were analyzed. Thirteen elements were measured and quantified in the samples: P, S, Cl, K, Ca, Cr, Mn, Fe, Ni, Cu, Zn, Sr and Ba. The measured ratio of Ca:P in dentine and enamel teeth is the same expected for hydroxyapatite: 2.13, for all three types. Trace element concentrations were found to be very similar between the three species, except for S, Cl, Fe, Cu and Sr. Ni and Cu concentrations were found to be close to 1 ppm, which is also close to the detection limits of the SP-PIXE system. |
| Databáze: | OpenAIRE |
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