电子探针氧化物ZAF修正法中氧元素K因子的深入解析  

In-depth analysis of element oxygen K factor in electron probe micro analyzer Oxide ZAF correction method

作　　者：于俊芳[1,2] 张晓峰 胡晋生 陈振宇 孟文祥[1,2] 乔桥 YU Junfang;ZHANG Xiaofeng;HU Jinsheng;CHEN Zhenyu;MENG Wenxiang;QIAO Qiao(Mining Research Institute of Baotou Steel(Group)Corp.,Baotou 014060,China;Inner Mongolia Key Laboratory of Mining and Metallurgical Solid Waste Resource and Green Comprehensive Utilization,Baotou 014060,China;Beijing CISRI-GAONA Materials and Technology Co.,Ltd.,Beijing 100081,China;JEOL(BEIJING)Co.,Ltd.,Beijing 100089,China;Institute of Mineral Resources,Chinese Academy of Geological Sciences,Beijing 100037,China)

机构地区：[1]包钢集团矿山研究院,内蒙古包头014060 [2]内蒙古自治区矿山及冶金固废资源化绿色化综合利用重点实验室,内蒙古包头014060 [3]北京钢研高纳科技股份有限公司,北京100081 [4]捷欧路(北京)科贸有限公司,北京100089 [5]中国地质科学院矿产资源研究所,北京100037

出　　处：《冶金分析》2025年第3期38-43,共6页Metallurgical Analysis

基　　金：包钢集团公司项目(BGKYKJ-GB-2024-05)。

摘　　要：在使用电子探针(EPMA)对含氧盐矿物做定量分析时,一般采用氧化物ZAF修正法(不测O元素K因子,简称Oxide ZAF法),而非Metal ZAF法(实测O元素K因子),虽然结果非常可靠,但与之前对ZAF修正的认知(需全元素参与,尤其高含量元素更不可或缺)有所冲突。为了更深入地了解Oxide ZAF法的修正过程,以便今后在对不同物质的定量分析时可以选择最适合的修正方法,本文以铁镁橄榄石(w(O)=44.00%,w(Mg)=31.41%,w(Fe)=6.27%,w(Si)=18.35%,w(Ni)=0.33%,w(Mn)=0.06%)为研究对象,使用两种修正方法做定量分析并进行对比,再通过编写的ZAF模拟程序展示迭代计算过程,验证了Oxide ZAF法中O元素的K因子虽未直接测量、但仍参与ZAF修正的这一重要理论;另外还讨论了Oxide ZAF法的适用范围,即样品需严格遵守氧化物化学式,且每种阳离子的化学价态单一,并由此引申出更具广泛用途的CAL定量分析方法;掌握此方法就可以实现碳酸盐,含水样品,含F、Cl、OH,以及含Li、Be元素矿物等的定量分析。When the electron probe micro analyzer(EPMA)is used for the quantitative analysis of oxide minerals,the Oxide ZAF correction method(without measurement of O element K factor,abbreviated as Oxide ZAF method)is usually used instead of Metal ZAF method(measurement of O element K factor).Although the results are very reliable,it is not consistent with the previous understanding of ZAF correction(all elements are required to participate in the analysis especially for the high-content elements).In order to have a deeper understanding on the correction process of Oxide ZAF,and so that the most suitable correction method can be selected for the quantitative analysis of different substances in the future,the ferromagnesia olivine[w(O)=44.00%,w(Mg)=31.41%,w(Fe)=6.27%,w(Si)=18.35%,w(Ni)=0.33%,w(Mn)=0.06%]was taken as the sample in this study,and the two correction methods were used for quantitative analysis and comparison.Then the iterative calculation process was shown by the ZAF simulation program,and the important theory that the K factor of O element in Oxide ZAF method was not measured directly,but it still participated in ZAF correction was verified.In addition,the application range of Oxide ZAF method was discussed,that was,the sample should strictly follow the oxide formula and the chemical valence state of each cation was single.A more widely used CAL quantitative analysis method was proposed.This method could be used for the quantitative analysis of carbonate,water-containing samples and minerals containing F,Cl,OH and Li and Be elements.

关 键 词：电子探针(EPMA) K因子 Metal ZAF法 OXIDE ZAF法 铁镁橄榄石 

分 类 号：TG115.215[金属学及工艺—物理冶金]