| 蓝色圆珠笔字迹的高效液相色谱分析与模式识别研究 |
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| 引用本文： | 刘柏林,黄锐,孔娜,曹渊.蓝色圆珠笔字迹的高效液相色谱分析与模式识别研究[J].分析测试学报,2010,29(7). |
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| 作者姓名： | 刘柏林 黄锐 孔娜 曹渊 |
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| 作者单位： | 1. 重庆大学,化学化工学院,重庆,400030
2. 重庆大学,生物工程学院,重庆,400030;西南政法大学,刑事侦查学院,重庆,401120 |
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| 基金项目： | 国家自然科学基金资助项目，重庆市科学委员会自然科学基金资助项目 |
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| 摘 要： | 该文收集市售蓝色圆珠笔样品16份,结合模式识别技术对其高效液相色谱数据进行研究。利用相关系数法计算色谱图相对峰面积的相似度,定量地评价样品间的差异性。选取16个样品3个批次间的最小相似度(λ=0.92)作为判定是否源于同种样品的阈值,相似度小于0.92的数据为89份,占全部比对样品的74.2%;根据液相色谱图的保留时间、峰数及峰形差异将所有样品分为3类,进一步利用系统聚类法依据相似度的大小将第一类样品分为3小类。该文提出的采用相对峰面积相似度评价样品差异的方法,能够显著提高分辨能力,促进圆珠笔字迹的自动化识别。高效液相色谱法获取数据,模式识别技术分析数据的方法为圆珠笔字迹的分类与鉴别提供了新思路。
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| 关 键 词： | 蓝色圆珠笔 高效液相色谱 相似度 聚类分析 |
Forensic Discrimination of Blue Ballpoint Pen Writing Inks Based on High Performance Liquid Chromatography and Pattern Recognition |
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| LIU Bo-lin,HUANG Rui,KONG Na,CAO Yuan.Forensic Discrimination of Blue Ballpoint Pen Writing Inks Based on High Performance Liquid Chromatography and Pattern Recognition[J].Journal of Instrumental Analysis,2010,29(7). |
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| Authors: | LIU Bo-lin HUANG Rui KONG Na CAO Yuan |
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| Institution: | LIU Bo-lin1,HUANG Rui2,3,KONG Na1,CAO Yuan1(1.College of Chemistry and Chemical Engineering,Chongqing University,Chongqing 400030,China,2.College of Biological Engineering,3.College of Criminal Investigation Law,Southwest University of Political Science and Law,Chongqing 401120,China) |
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| Abstract: | Ink analysis is an important part of material evidence analysis in forensic science.It needs not only to acquire data by precision chemical analysis instruments,but also to parse data by the chemometrics methods such as principal component analysis(PCA),cluster analysis(CA) and pattern recognition etc.16 kinds of blue ballpoint pen inks from the local market were studied by high performance liquid chromatography(HPLC) coupled with pattern recognition technology.With the similarities of the relative peak are... |
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| Keywords: | blue ballpoint pen high performance liquid chromatography similarity hierarchical cluster analysis |
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