扫描电镜法和红外光谱法在纤维物证分析中的应用实例  

Application Example of SEM and Infrared Spectroscopy in Fiber Evidence Analysis

作　　者：钟宇 杨柳 Zhong Yu;Yang Liu(Safety Technology Center of Sichuan Coal Mine Safety Supervision Bureau,Chengdu 610041,China)

机构地区：[1]四川煤矿安全监察局安全技术中心,四川成都610041

出　　处：《山东化工》2024年第6期152-155,共4页Shandong Chemical Industry

摘　　要：纤维的种类很多,其中很多种类是组成纺织品的基本单元。纺织品与人们的日常生活密不可分且应用广泛,纤维经常出现于案发现场而成为最常见的物证之一。用仪器设备鉴定纤维的方法有很多,常用的有显微镜法、红外光谱法、拉曼光谱法、显微分光光度法等。描述了在某交通事故司法鉴定案例中通过扫描电镜法与红外光谱法配合,对当事人外套上取下的织物碎片与两台嫌疑车辆上取下的纤维进行一致性比对的实验过程。采用扫描电子显微镜分析了纤维的微观形貌,在外观上对纤维进行了区分。用红外光谱仪分析了纤维的官能团结构,确定了纤维种类。结合扫描电镜和红外光谱的分析结果,最终确定了肇事车辆。There are many types of fibers,many of which are the basic units that make up textiles.Textiles are closely related to people's daily lives and widely used,with fibers often appearing at crime scenes and becoming one of the most common physical evidence.There are many methods for identifying fibers using instruments and equipment,including microscopy,infrared spectroscopy,Raman spectroscopy,and microscopic spectrophotometry.This article describes the experimental process of using scanning electron microscopy and infrared spectroscopy in a traffic accident judicial appraisal case to compare the consistency between the fabric fragments taken from the person's jacket and the fibers taken from two suspected vehicles.The microstructure of the fibers was analyzed using scanning electron microscopy,and the fibers were distinguished in appearance.The functional group structure of the fiber was analyzed using an infrared spectrometer,and the fiber type was determined.Based on the analysis results of scanning electron microscopy and infrared spectroscopy,the vehicle involved in the accident was ultimately identified.

关 键 词：扫描电镜 红外光谱 纤维物证 

分 类 号：O657.33[理学—分析化学] TG115.215.3[理学—化学]