微束微区X荧光探针分析仪的矿物定量分析

介绍了微束微区X荧光探针分析仪的工作原理,该探针分析仪能够对样品表面约50μm范围内进行多元素定性与定量分析.在定量分析中,建立线性校准方程,采国家标准样品对微束微区X荧光该探针分析仪进行校准曲线的系数标定.以Fe、As和Ti元素所制定的校准曲线为例,定量分析出的元素含量与标准含量相对误差低于9.62％.结果显示微束微区X荧光探针分析仪具有较高的能量的分辨率,可以快速鉴定矿石的物质成分.定量分析结果的准确度低于地质样品分析的误差标准.表明该探针分析仪可以应用于野外条件下矿石微区成分的定性与定量分析.

Mineral Quantitative Analysis of Micro-Beam and Micro-District X Fluorescence Probe Analyzer

This paper introduces the mechanism of X fluorescence prooe lnstrunm-L ＊- -, beam and micro-district, and this instrument is able to achieve qualitative and quantitative analysis within area about 50μm on the sample surface. In the quantitative analysis, building calibration equations and using national standard samples standardize the coefficient of calibration curves of the instrument. Take calibration curves of iron, arsenic and titanium as an example, the relative error of element content is no more than 9. 62% comparing values of quantitative analysis with values of recommended. The outcome shows that X fluorescence probe instrument in microbeam and micro- district has higher energy resolution and it can identify the contents of mineral stones. The accuracy of quantitative analysis is lower than the error standard of geological sample analysis, therefore this instrument can be used in qualitative and quantitative analysis of minerals＇ micro contents in the wild.