共焦显微拉曼光谱对签字笔字迹形成时间的研究  

Study on the Ageing of Black Rollerball Pen' Ink Trace by Application of Confocal Micro-Raman

作　　者：籍康[1] 赵杰[2] 

机构地区：[1]南京师范大学分析测试中心江苏省光电技术重点实验室,江苏南京210046 [2]南京师范大学法学院,江苏南京210097

出　　处：《南京师大学报（自然科学版）》2010年第4期68-71,共4页Journal of Nanjing Normal University(Natural Science Edition)

基　　金：国家自然科学基金(20603018)

摘　　要：利用共焦显微拉曼光谱技术,以紫外激光325nm作激发光源,对黑色签字笔墨迹做了时间跨度为4年的拉曼光谱数据采集和对拉曼光谱的定量分析.结果表明:在1592 cm-1位置处的拉曼特征峰的相对强度随时间的越久远而变大.借此,可用检定材料的拉曼光谱数据与确切的不同时期的时间样本数据进行比对来判断出黑色签字笔墨迹的相对形成时间.共焦显微拉曼光谱技术为黑色签字笔墨迹的形成时间提供了一种快速、便捷、准确、无损检测的方法.This paper provides the data of the black rollerball pen＇ s ink trace variation in 4 successive years. This research, taking the advantage of eonfocal micro-Raman technology and the ultraviolet laser as light source, lasted 4 years running. The result shows that at the position of 1592 cm -1, the ralative integrated intensity of the Raman characteristic peak grew along with the growth of time, and in accordance with this result, the trace formation time of the black rollerball pen＇ s ink can be judged through the contrast of the Roman spectra data of the material under comparing with the sample time data of different time. The result of this paper justifies the fact that the confoeal micro-Raman technology provides a quick, convenient, accurate and non-destructive detection method for the black rollerball pen＇ s ink trace testing.

关 键 词：拉曼光谱 签字笔墨迹 无损检测 

分 类 号：O657.37[理学—分析化学]