世界核地质科学2025，Vol.42Issue(4)：700-709,10.DOI:10.3969/j.issn.1672-0636.2025.04.002
电子探针定量分析的不确定度评定与优化
Uncertainty evaluation and optimization in electron probe quantitative analysis
摘要
Abstract
In response the requirement of uncertainty evaluation ability of laboratory engaged in the detection and calibration with electron probe micro-analysis(EPMA),this paper analyzes the key influencing factors such as counting intensity,accuracy of reference material and matrix correction under the theoretical framework of uncertainty.Based on the measurement formular of EPMA,we carried out an experimental study and conducted comprehensive evaluations of the uncertainties associated with above factors.The results indicate that the uncertainty of analysis results can be effectively reduced by standardizing sample preparation,ensuring instrument stability,optimizing testing conditions,selecting appropriate reference materials and employing suitable matrix correction methods.For scenarios where uncertainty evaluation is not required,empirical methods for data quality assessment were suggested.Overall,this study provided a scientific basis and operational guidelines for enhancing the accuracy and reliability in EPMA quantitative analysis.关键词
电子探针/不确定度/元素组成/定量分析/误差Key words
electron probe micro-analysis/uncertainty/element composition/quantitative analysis/error分类
天文与地球科学引用本文复制引用
葛祥坤,邰宗尧,何永志,岑晶轩,邓刘敏,范光..电子探针定量分析的不确定度评定与优化[J].世界核地质科学,2025,42(4):700-709,10.基金项目
中国核工业地质局铀矿地质科研项目"鄂尔多斯盆地新庄—特拉敖包地区铀矿石物质成分精细研究"(编号:地D2505)资助 Supported by Uranium Geological Research Program of the Nuclear Industry Geological Bureau of China"Detailed Study of Uranium Mineral Composition in the Xinzhuang-Tela Aobao Area,Ordos Basin"(No.地D2505) （编号:地D2505）
