傅立叶显微红外化学成像在朱墨时序鉴定中的应用研究

目的建立朱墨时序的傅里叶显微红外成像检验方法。方法根据印文及油墨的红外光谱特征峰,使用傅立叶变换红外（FTIR）成像系统直接对纸张上印文及文字油墨进行化学成像,根据成像特征从而判断朱墨时序。结果先打印后盖章的红外成像中油墨字迹的红外成像不完整,有被印章所覆盖的痕迹,而印章的红外成像完整,在字迹中可见印章成像斑点。先盖章后打印的红外成像中油墨字迹的红外成像完整,没有被印章所覆盖,而印章的红外成像不完整,被字迹的油墨所覆盖。结论该方法较传统的鉴定方法更加快速、简单,可以更加直观的反映行文顺序,并且具有不破坏检验样本的特点。

Application of FT-IR microscopic chemical imaging system to identify the sequence of crossed writings and seal stamps

Objective To establish a method for identifying the sequences of crossed writings and seal stamps. Methods Basing on different IR spectra of the writings and seal stamps, FTIR microscopic chemical image system was used to analysis chemical im age to identify the sequences of crossed writings and seal stamps on paper. Results The analytical results show that the IR images of writings under seal stamp were not completed and an integrity stamp images was found on the surface of writings. While the IR images of writings on seal stamp were integrity, the IR images of seal stamps were covered by writings. Conclusion FTIR microscopic chemical Imaging is a simple, non- destructive method for identifying the sequences of crossed writings and seal stamps.