X射线荧光光谱测定铝矿石中主次量元素含量

Determination of Major,Minor and Trace Elements in Bauxite by XRF Spectrometry

关键词:  X射线荧光光谱  铝矿石  理论α系数  散射线内标法  熔融法

Key words:  X-ray fluorescence spectrometry  bauxite  theoretical α coefficients  scattered line as internal standard  fusion technique

摘要:

用熔融玻璃片制样,用理论a系数和基本参数次法校正元素间的效应,用X射线光谱仪对铝矿石样品中的Al₂O₃、SiO₂、Fe₂O₃、TiO₂、K₂O、Na₂O、CaO、MgO、P₂O₅、MnO、S、Pb、Zn、Sr、Sc Zr、V、Ga、Cr等19种组分进行测定。结果表明,各组分的RSD均小于9.80%,除个别组分元素的含量在检测限附近误差较大,其余组分元素含量与标准值基本吻合。该测定方法的精密度和准确度可与化学法相媲美。

Abstract:

An X-ray fluorescence spectrometric method with a fusion technique and pressed pellet sample preparation has been established for determining Al₂O₃、SiO₂、Fe₂O₃、TiO₂、K₂O、Na₂O、CaO、MgO、P₂O₅、MnO、S、Pb、Zn、Sr、Sc Zr、V、Ga、Cr in bauxite.The theoretical α coefficients and compton scattered line as internal standard were used to correct matrix effect.The result shows that the RSD is below 9.80%.Expect some individuals,most of the elements match with the standards.The precision and accurracy of the methed is comparable with chemical method.