电子探针矿物定量分析用标准参考样品

Reference Samples for Elecptron Microrobe Analysis

一、概述,电子探针分析和多数仪器分析法一样,是比较分析。电子束轰击样品所产生的元素特征x—线强度,是样品中此元素浓度的函数。定量分析时,需在相同条件下与标准参考样品所产生的同一元素的X—线强度相比较,才能确定此元素的含量。关系式表示为.

The homogeneity index,σ/√x is reported for several major constituents in 14 minerals.Among them five were found to be homogeneous and may be useful as microprobe standards.These are two silicate minerals(forsterite and epidote),one tektite,one oxide mineral(cassiterite),and one sulfide mineral(pyrite).They were analy/ed by wet chemical methods.