基于X射线荧光光谱与双标图对鞋底材料的分类研究  

Study on Classification of Sole Materials Based on X⁃Ray Fluorescence Spectrometry and Biplot Analysis

作　　者：张景顺 姜红 满吉 ZHANG Jingshun;JIANG Hong;MAN Ji(School of Forensic Science,People’s Public Security University of China,Beijing 100038,China;Beijing Huayi Hongsheng Technology Limited Company,Beijing 100123,China)

机构地区：[1]中国人民公安大学刑事科学技术学院,北京100038 [2]北京华仪宏盛技术有限公司,北京100123

出　　处：《中国塑料》2020年第9期80-83,共4页China Plastics

基　　金：中国人民公安大学2019年度基本科研业务费重点项目(2019JFK222);国家重点研发计划项目(2017YFC0822004)。

摘　　要：鞋底材料在法庭科学中可作为微量物证出现,利用手持式X射线荧光光谱仪(XRF)检验了30个鞋底样品,获取鞋底材料中无机填料的元素含量信息。使用双标图(Biplot)对样品进行分类,结果可分为5类,表现了各样品在无机元素含量上的差别,并挖掘了各样品在变量上的特征信息;使用层次聚类验证分类结果。结果表明,该方法对鞋底XRF数据分类效果理想;XRF与双标图可以从无机填料角度检验并分类鞋底材料,且双标图方法在分析XRF实验数据中有一定应用潜力。Sole materials can provide trace evidence in forensic science.In this paper,we examined 30 sole samples by us⁃ing a hand⁃held X⁃ray fluorescence spectrometer(XRF)to obtain information about the content of elements in the inor⁃ganic fillers of soles.The samples were classified into five categories by the Biplot,which showed the differences in the inorganic filler content of each sample.The feature information of each sample in the variable was explored.The hierar⁃chical cluster was used to verify the classification results.The results indicated that this method had an ideal effectiveness for the classification of XRF data.XRF and Biplot can be used to examine and classify sole materials from the perspec⁃tive of inorganic fillers.The Biplot method has a great potential application for analysis of XRF experimental data.

关 键 词：鞋底填料 X射线荧光光谱 双标图 层次聚类 

分 类 号：TQ317.2[化学工程—高聚物工业]