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Method of reference samples preparation for X-ray fluorescence analysis
Talanta ( IF 5.6 ) Pub Date : 2022-08-09 , DOI: 10.1016/j.talanta.2022.123820
I P Sverchkov 1 , I M Gembitskaya 1 , V G Povarov 1 , M A Chukaeva 1
Affiliation  

The study focuses on the development of a new procedure for the preparation of reference samples with a given concentration for X-ray fluorescence analysis by adding certain volume of analyzed elements solutions with a known concentration to certified reference rock materials and further fusion with borate fluxes. The presented method of preparing emitters allows not only to obtain samples with the required concentrations for the elements to be determined, but also to preserve the influence that other elements have on the analytical signal. A set of 12 certified reference samples of rocks was used to construct calibration dependencies. The preparation of multicomponent modified reference samples (MRS) was carried out on the basis of certified reference materials (CRM) included in the set for constructing calibration curves. The concentration dependences on the analytical signal were established for the main oxides (SiO2, TiO2, Al2O3, TFe2O3, MnO, MgO, CaO, Na2O, K2O, P2O5) and minor elements (Cr, Cu, Ba, Ni, Sr, V, Zr, and Zn) using an X-ray fluorescence spectrometer with wavelength dispersion. With the help of modified reference samples, the calibration curves were expanded and supplemented both for major oxides (P2O5, MnO) and for minor elements (Zn, Sr). Also, in the course of the research, a comparison was made of the homogeneity of the emitters obtained according to the MRS preparation procedure presented in the work and reference samples (RS) made of CRM prepared according to the standard method for rocks, and the composition of inclusions on the surface of the fused disks was determined.



中文翻译:

X射线荧光分析用参考样品制备方法

该研究的重点是开发一种新程序,用于制备具有给定浓度的用于 X 射线荧光分析的参考样品,方法是将一定体积的已知浓度的分析元素溶液添加到经过认证的参考岩石材料中,并进一步与硼酸盐熔剂融合。所提出的发射器制备方法不仅可以获取具有待测元素所需浓度的样品,还可以保留其他元素对分析信号的影响。一组 12 个经认证的岩石参考样本用于构建校准相关性。多组分改良参考样品 (MRS) 的制备是在用于构建校准曲线的集合中包含的认证参考物质 (CRM) 的基础上进行的。2、TiO 2、Al 2 O 3、TFe 2 O 3、MnO、MgO、CaO、Na 2 O、K 2 O、P 2 O 5 )及微量元素(Cr、Cu、Ba、Ni、Sr、V、 Zr, 和 Zn) 使用具有波长色散的 X 射线荧光光谱仪。在改进的参考样品的帮助下,扩展和补充了主要氧化物(P 2 O 5, MnO) and for minor elements (Zn, Sr). Also, in the course of the research, a comparison was made of the homogeneity of the emitters obtained according to the MRS preparation procedure presented in the work and reference samples (RS) made of CRM prepared according to the standard method for rocks, and the composition of inclusions on the surface of the fused disks was determined.

更新日期:2022-08-09
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