Determination of F, S(total), and Cl in the Calcite Rich Limestone and Marbles by WD-XRF Spectrometry

Abstract

: Determining the contents of F, S (total) , and Cl in the studied samples of the limestone and marbles with high calcite contents was carried out by the nondestructive method of WDXRFS (Wavelength Dispersive X-ray Fluorescence Spectrometry). All measurements were performed in a vacuum condition using a WDXRF spectrometer S8 TIGER (Bruker AXS, Germany). The studied samples have wide ranges of F, S (total) , and Cl contents, and high concentration of calcite (89.5%-99%). Main objective of this research is to develop WDXRF (WD X-ray fluorescence) technique for the determination of F, S (total) , and Cl. The calculated values of the ILD (instrumental limit of the detection) were within the interval from 3 for S (total) to 37 for F mg/kg. The repeatability was found to be satisfactory with the relative standard deviations lower than 7%.