کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1879441 | 1042568 | 2009 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Multivariate comparison of elemental concentrations in human teeth Multivariate comparison of elemental concentrations in human teeth](/preview/png/1879441.png)
R-mode factor analysis was applied to characterize the chemical composition of human teeth investigated by particle induced X-ray emission (PIXE), Rutherford backscattering spectrometry (RBS) and X-ray fluorescence (XRF) techniques. The approach developed in this study enabled the separation between essential mineral teeth components and the pollutants deposited in teeth tissues during the human life. The three independent sources of metals incorporated in human teeth were found. The first source, representing about 43% of the variance of the concentration data, was characterized by pollutant elements of power industry emissions. The second factor was loaded with toxic elements of general urban pollution. The third factor represented the tooth source as it contained mainly large fractions of the mineral components of the tooth tissue as Ca and K.
Journal: Applied Radiation and Isotopes - Volume 67, Issue 12, December 2009, Pages 2142–2145