摘要
物证化学指纹的检验在法庭溯源中至关重要。传统化学法检验耗费样品多,检出限高,检测标志物数量少;光谱分析方法虽消耗样品少、检测速度快,但是不能分离组分,易出现干扰情况。色谱能够分离分析复杂组分,适合化学指纹的检验。化学计量学、化学模式识别方法使得色谱分析方法发生了巨变,分析色谱整体数据提高了数据的利用率,增加了化学指纹的准确性。色谱指纹图谱为聚类分析提供了充足数据,聚类分析方法则充分挖掘了隐藏在色谱指纹图谱中的关键信息。通过对化学模式识别和聚类分析进行了简要介绍,系统总结了色谱指纹图谱无监督模式识别方法在法庭溯源中的应用,介绍了一些色谱新技术,并对色谱指纹图谱在法庭溯源未来发展应用提供了建议。
The testing of chemical fingerprints in physical evidence is crucial in forensic tracing.Traditional chemical test methods require a lot of samples,have high detection limits,and possess a small amount of detection markers.Although spectral analysis methods consume less samples and have faster detection speed,they cannot separate each component in complex samples and are susceptible to interference.Chromatography can separate and analyze complex components,making it suitable for chemical fingerprint testing.Chemometrics and chemical pattern recognition methods have brought about significant changes in chromatographic analysis methods,improving the utilization of overall chromatographic data and increasing the accuracy of determining chemical fingerprints.Chromatographic fingerprints provide sufficient information for clustering analysis while clustering analysis methods fully explore the key information hidden in chromatographic fingerprints.This review article provided a brief introduction to chemical pattern recognition and cluster analysis,systematically summarized the applications of unsupervised pattern recognition methods for chromatographic fingerprints in court tracing,introduced some new chromatographic technologies,and additionally provided suggestions for the future development and application of chromatographic fingerprints in forensic tracing.
作者
李昊洋
张文骥
韩祺瑞
罗颖超
LI Hao-yang;ZHANG Wen-ji;HAN Qi-rui;LUO Ying-chao(Department of Forensic Science of Criminal Investigation Police University of China,Shenyang 110854,China)
出处
《化学试剂》
CAS
2024年第3期91-98,共8页
Chemical Reagents
基金
辽宁省教育厅基本科研项目重点攻关项目(JYTZD2023147)。
关键词
色谱指纹图谱
聚类分析
化学计量学
溯源分析
法庭科学
chromatographic fingerprint
cluster analysis
chemometrics
tracing analysis
forensic science
作者简介
李昊洋(2000-),男,山东临沂人,硕士生,主要研究方向为毒物毒品分析;通讯作者:张文骥,E-mail:cipuc_zwj@163.com。
