显微分光光度计鉴别印油印泥的研究  

Study on Classifying the Types of Inkpad by Microspectrophotometry

作　　者：叶卓龙 王长亮 龚力伟 崔岚[1] YE Zhuo-long1, WANG Chang-liang2, GONG Li-wei1, CUI Lan1(1 Criminal Investigation Police University of China, Liaoning Shenyang 110000;2 Shanghai Municipal Bureau of Forensic Sciences, Shanghai 200000, Chin)

机构地区：[1]中国刑事警察学院,辽宁沈阳110000 [2]上海市刑事科学技术研究院,上海200000

出　　处：《广州化工》2018年第15期111-115,共5页GuangZhou Chemical Industry

基　　金：上海市现场物证重点实验室开放课题基金资助(No:2017xcwzk10);公安部科技强警基础工作专项项目资助(No:2017GABJC30);"十三五"国家重点研发计划项目资助(No:2016YFC0800705);中国刑事警察学院研究生创新能力提升项目资助(No:2017YCZD04)

摘　　要：实验使用显微分光光度法对42种不同品牌及型号印油(印泥)进行无损鉴别,还考察了A4打印纸、信纸、稿纸、无碳复写纸对结果的影响,实验结果表明:(1)样本反射光谱图可分为六类;(2)样本两两比对色差小于6的数据有84份,占总数据的9.76%;(3)结合光谱图分类与色差数据计算出样本区分率为95.93%。实验证明显微分光光度法对印油(印泥)有较强的区分效果。A nondestructive discriminating approach for inkpads by microspectrophotometry was studied. 42 inkpadswith different brands and models were collected as experimental object. The effects of A4 paper, stationery, manuscriptand carbonless copying papers on the results were also investigated. The result showed that the sample’s reflectancespectras were divided into six classes by microspectrophotometry according to the characteristic peak and the basic trend.Selecting chromatic aberration （△E） equal to 6 as threshold value, there were 84 samples whose color difference was lessthan 6, accounting for 9. 76% of the total data. Combing the sort of reflectance spectra chromatic and △E between thedata, the discriminating power of samples was calculated by 95. 93% . Obviously, microspectrophotometry had anexcellent discriminating power to inkpad, and the result of experiment is stable and reliable.

关 键 词：印油 印泥 显微分光光度法 色差 纸张 

分 类 号：O65[理学—分析化学]