Wang Yuanfeng, Li Bing
China University of Political Science and Law, Beijing, China.
Sci Justice. 2012 Jun;52(2):112-8. doi: 10.1016/j.scijus.2011.10.001. Epub 2011 Oct 29.
The aim of this study was to verify that the combination of Fourier transform infrared microspectroscopy and scanning electron microscope / energy dispersive X-ray mapping could be applied to line intersection problems. The spectral data of red seal ink, laser toner and their intersections, such as peak location and peak intensity, were described. Relative peak height ratios of different chemical components in intersecting lines were used to distinguish the sequences. Energy dispersive X-ray mapping characteristics of intersecting areas were also detailed. The results show that both the laser toner and the seal ink appear on the surface of intersections, regardless of the sequence. The distribution of the two inks on the surface is influenced not only by the sequence of heterogeneous lines but also by diffusion. Fourier transform infrared microspectroscopy and scanning electron microscope/energy dispersive X-ray mapping are able to explore the chemical components and the corresponding elemental distribution in the intersections. The combination of these two techniques has provided a reliable method for sequencing intersecting lines of red seal ink and laser toner, and more importantly, this method may be a basis for sequencing superimposed lines from other writing instruments.
本研究的目的是验证傅里叶变换红外显微光谱法与扫描电子显微镜/能量色散X射线映射相结合是否可应用于线条交叉问题。描述了红色印章油墨、激光碳粉及其交叉处的光谱数据，如峰位置和峰强度。利用交叉线条中不同化学成分的相对峰高比来区分先后顺序。还详细介绍了交叉区域的能量色散X射线映射特征。结果表明，无论先后顺序如何，激光碳粉和印章油墨都会出现在交叉处的表面。两种油墨在表面的分布不仅受异质线条先后顺序的影响，还受扩散的影响。傅里叶变换红外显微光谱法和扫描电子显微镜/能量色散X射线映射能够探究交叉处的化学成分和相应的元素分布。这两种技术的结合为红色印章油墨和激光碳粉交叉线条的排序提供了一种可靠的方法，更重要的是，该方法可能是对来自其他书写工具的叠加线条进行排序的基础。
