作者: F. Callens , P. Moens , R. Verbeeck
DOI: 10.1007/BF00298587
关键词: Ion 、 Human tooth 、 Analytical chemistry 、 Radical 、 Electron paramagnetic resonance 、 Mineralogy 、 Block (periodic table) 、 Spectral line 、 Materials science 、 Enamel paint 、 Anisotropy
摘要: An EPR study of human tooth enamel dried at 400°C is presented. Enamel blocks as well powdered samples were investigated. The discussion deals mainly with three different spectral components, i.e., a CO 3 3- and two 2 - signals. Using the anisotropic block spectra, convincing differentiation between latter radicals was possible. first signal shows no dependence on orientation blocks, disappears from spectrum upon heating, assigned to surface radical. second component responsible for angular variation bulk position. For ion, (pseudo) its isolated presented discussed. By means results in this study, earlier interpretation problems are considerably reduced.