紫外可见主成分分析法对蓝色签字笔油墨的分类研究  

Characterization of blue gel pen inks using principal component analysis of UV-vis absorption spectra

作　　者：郭瑞华[1] 苏佳利[1] 邹洪[1] 刘克林[2] 

机构地区：[1]首都师范大学化学系,北京100048 [2]公安部物证鉴定中心,北京100038

出　　处：《现代仪器》2011年第2期49-51,40,共4页Modern Instruments

基　　金：北京市教委基金(KM201010028009)

摘　　要：本文采用薄层色谱法和紫外可见光谱法分析33支蓝色签字笔油墨。截取400～700 nm之间的紫外可见光谱数据进行主成分分析。主成分(PC)分析结果表明主成分1、2和3的累积贡献率已达86.84%,以主成分1、2对所有样品的得分值作图,结果显示时不同品牌的蓝色签字笔有很好的聚类作用。将主成分分析的分类结果同薄层色谱法的分类结果相比较,结果表明,采用主成分分析技术可以达到对蓝色签字笔墨字迹的良好识别。Thirty three blue gel pens inks were examined on the basis of UV-Vis spectrum with a view to achieving good discrimination between them.Samples were dissolved in DMF ,their absorbance values in the raneg of 400-700nm ,after appropriate transformations ,were used as variables in principal component analysis .The analysis suggested that the cumulate reliability of PC1,PC2 and PC3（the first three principal components ）were more than 86%,and the 2-dementional plot was drawn with the scores of PC1 and PC2,which was a good clustering analysis for descrimination of these pens .Compared to result of TLC ,it was found the PCA could provide a good method for the discrimination of blue gel pen

关 键 词：主成分分析 紫外可见 蓝色签字笔油墨 薄层色谱法 

分 类 号：O212.4[理学—概率论与数理统计]