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



Author(s)

Svetlana Ivanovna Shtel’makh

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DOI:10.17265/2328-2193/2020.05.001

Institute of the Earth’s Crust, SB RAS, 128 Lermontov St., Irkutsk 664033, Russia

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%.

X-ray fluorescence analysis, carbonate rocks with high calcite contents, limestone, marble, analytical figures of merit.