积分球-分光光度法在磁卡火车票鉴定中的应用  

Identifying Magnetic Train Ticket with Integrating Sphere Spectrophotometry

作　　者：张乐 羡闻鹏 周天武 刘捷 袁华 丁斌 张丽萍 李晋 ZHANG Le;XIAN Wenpeng;ZHOU Tianwu;LIU Jie;YUAN Hua;DING Bin;ZHANG Liping;LI Jin(Criminal Technology Section of Lanzhou Railway Public Security Bureau,Lanzhou 730000,China;Criminal Technology Detachment of Lanzhou Railway Public Security Division,Lanzhou 730000,China;Gansu University of Political Science and Law,Lanzhou 730070,China)

机构地区：[1]兰州铁路公安局刑事技术处,兰州730000 [2]兰州铁路公安处刑事技术支队,兰州730000 [3]甘肃政法大学,兰州730070

出　　处：《刑事技术》2021年第3期278-281,共4页Forensic Science and Technology

基　　金：甘肃政法大学青年项目(2016XQNLW03)。

摘　　要：目的研究利用积分球-分光光度法对票证进行检验鉴定的方法条件,为票证检验鉴定工作提供新方向与依据。方法以磁卡式火车票为例,利用积分球-紫外-可见分光光度仪在全扫描模式下进行无损检验,分别测定票面上不同位置吸光度,利用制式票样具有同一特性的特点,对测定所得最大吸收波长及其他特征波长与假票同步进行比对,判别真伪。结果真票样特征吸收稳定可靠,假票样特征吸收经比对有明显量值差异,差异值抽样误差低。结论利用积分球-分光光度法对票证进行检验鉴定,区分样本与检材的本质差异,辨别真伪效果显著,鉴定结果量化准确,并对样本无损。Objective To explore the method and prerequisite about identifying magnetic train ticket with integrating sphere spectrophotometry so as to provide reference and new approach for identification of ticket-sort evidence.Methods The magnetic-card train tickets were taken as the tested sample,having them subjected to non-destructive measurement under full scanning mode with the integral sphere ultraviolet visible spectrophotometer so that the tickets were detected of their absorbance at different positions.Based on the trait that genuine tickets preserve uniform and identical characteristics,the comparison was carried out between the genuine and fake tickets with their respective absorptions obtained at both maximal and other characteristic wavelengths.Results The genuine tickets hold uniform and identical characteristics,presenting stable and reliable absorptive specialty,contrasting against the fake tickets behaving obvious quantity-different absorptions.Conclusion Ticket identification using integral-sphere spectrophotometry can distinguish the essential difference between the genuine and fake tickets,presenting remarkable effect of discerning the true from false,having demonstrated accurate results without damage to the tested materials.

关 键 词：文书检验 票证鉴定 积分球-分光光度法 磁卡式火车票 

分 类 号：DF794.2[政治法律—诉讼法学]