Simultaneous Determination of Major and MinorComponentsin Silica Samples by XRF
Received:September 26, 2016  Revised:December 21, 2016
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DOI:doi:10.3969/j.issn.2095-1035.2017.02.014
KeyWord:fusion sample preparation; X-ray fluorescence spectrometer; silica sample
           
AuthorInstitution
MA Jingzhi 中南冶金地质研究所,湖北宜昌
JIA Haifeng 中南冶金地质研究所,湖北宜昌
LAN Lvdeng 中南冶金地质研究所,湖北宜昌
WANG Feng 中南冶金地质研究所,湖北宜昌
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Abstract:
      A fast fused sample-XRFmethod for directly determining themajor and minor components(SiO2, Al2O3, TFe2O3, MgO, CaO, K2O, MnO, TiO2 and P2O5)in silica samples was developed.Glass?fuse?pieces were made by fusion sample preparation method with Li2B4O7, LiBO2 and LiF (Mass ratio 45:10:5) as flux, NH4NO3 as oxidant and LiBr as stripping agent. Siliceous sandstone, quartzite standard samples and some self-made standard samples were all used as the calibration samples.Some conditions for sample preparation and analysis were optimized. Under optimal conditions, the certified reference material of GBW03112、GBW07835) were repeatedly tested. The relative standard deviation (RSD, n=12) was less than 2%. The proposed method was successfully applied to the determination of three mixed silica standard samples, and the results showed no significant difference with the reference values.
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