Method of scattering of X-rays as a spectroscopic technique for quality control samples with organic composition

摘要

"The methodology of scattering of X-rays as a spectroscopic technique for quality control samples with organic composition.Which provides for the scattering of X-rays from the source of HR was employed as an alternative to the quality control of varnishes.Focusing on obtaining data for natural weathering tests.For this study, 16 samples of commercial paints were investigated, employing a equipment of X-ray fluorescence by dispersion of energy.Together with principal component analysis (PCA). This equipment has as its source an X-ray tube of RH and has a detector of Si (LI).The measurements were performed with a voltage of 50 kV and 100 109 applied to the tube, under the atmosphere of air, with beam collimator 10 mm and 25% dead time.The reading time for each sample was 50 s and the spectra were obtained in the region of the 40 keV, with spectral resolution of 0.02 keV (totaling 2048 points).