差分拉曼光谱结合化学计量学检验一次性口罩  

Disposable Masks Which Tested by Differential Raman SpectroscopyCombined with Stoichiometry

作　　者：陈潼 姜红 李传召[2] 倪婷婷 Chen Tong;Jiang Hong;Li Chuanzhao;Ni Tingting(Chongqing Public Security Bureau High-tech Industrial Development Zone Branch Criminal Investigation Detachment Criminal Technology Brigade,ChongQing 400015,China;College of Investigation,People's Public Security University of China,Beijing 100038,China;Department of Criminal Investigation,Gansu Police Vocational College,Gansu Lanzhou 730046,China;Nanjing Jianzhi Instrument Equipment co.,LTD.,Jangsu Nanjing 210049,China)

机构地区：[1]重庆市公安局高新技术产业开发区分局刑事侦查支队刑事技术大队,重庆400015 [2]中国人民公安大学侦查学院,北京100038 [3]甘肃警察职业学院刑事侦查系,甘肃兰州730046 [4]南京简智仪器设备有限公司,江苏南京210049

出　　处：《实验与分析》2023年第2期11-17,共7页LABOR PRAXIS

基　　金：南京简智仪器设备有限公司技术合作项目(20191218)。

摘　　要：为探索一种新的一次性口罩检验分类方法,收集了31个不同厂家生产的一次性口罩,并用差分拉曼光谱仪进行检验,得到差分拉曼光谱图。对差分拉曼光谱图进行对比,人工分成4类。利用IBM SPSS Statistics 25.0软件对数据进行标准化处理,再分别用系统聚类分析和K均值聚类分析进行分类,最后用Fisher判别分析验证以上分类方法和分类结果的科学性。结果显示,当并类距离最小时,一次性口罩样品可以分为6类,基本是在人工分类的基础上对样品进行进一步的细分。这种利用差分拉曼光谱法结合化学计量学的检验方法,具有无损、高效的优点,能够为法庭科学技术的物证检验鉴定提供帮助。A new test and classification method for disposable masks was explored.Disposable masks produced by 31 different manufacturers were collected and tested with differential Raman spectrometer,and the differential Raman spectra were obtained.The difference Raman spectra were compared and divided into 4 categories manually.IBM SPSS Statistics 25.0 software was used to standardize the data,and then systematic cluster analysis and K-means cluster analysis were used to classify the data,and finally Fisher discriminant analysis was used to verify the above classification methods and classification results.The results showed that when the parallel distance was the lowest,disposable mask samples could be divided into 6 categories,which basically further subdivided the samples on the basis of manual classification.This method,which combines differential Raman spectroscopy with stoichiometry,has the advantages of non-destructive and efficient,and can provide help for the forensic scientific and technical examination and identification of material evidence.

关 键 词：差分拉曼光谱 一次性口罩 化学计量学 分类研究 

分 类 号：O657.37[理学—分析化学]