能量色散X射线散射结合主成分分析对液体易制毒化学品的探测与鉴别分类

采用能量色散X射线散射(EDXRS)技术探测了8种液体易制毒化学品的X射线散射光谱, 结果显示液体易制毒物质具有各自特征的EDXRS散射图谱. 将液体易制毒化学品的EDXRS散射信息与主成分分析结合, 发现前2个主成分可以表达X射线散射光谱的主要信息, 在PC1～PC2得分分布图上可将液体易制毒化学品进行分类. 研究结果表明, EDXRS光谱技术结合主成分分析法可以实现探测、 鉴别分类液体易制毒化学品, 为隐藏液体易制毒化学品的监管控制提供一个可行的鉴别方法.

Detection and Discrimination of Liquid Precursor Chemicals Using EDXRS and Principal Component Analysis

The scattering spectra of eight kinds of liquid precursor chemicals have been obtained using energy dispersive X-ray scattering(EDXRS) technology. The results show that the EDXRS spectra of liquid precursor chemicals are unique under the same probe conditions. With the combination of EDXRS and principal component analysis(PCA), it is shown that the main information of X-ray scattering spectra can be expressed by first and second principal component extracted by PCA, and a satisfactory clustering effect for the classification and discrimination of liquid precursor chemicals is observed in the two-dimensional scores plot. The research de-monstrates that liquid precursor chemicals can be detected and classified by EDXRS and PCA, which shows the potential application to monitor and control of concealed liquid precursor chemicals.