使用气相色谱法对用印台油墨制作的印章进行年代测定。
Dating of seals produced with stamp-pad ink using gas chromatography method.
作者信息
Li Biao
机构信息
Department of Document Examination, China Criminal Police University, No. 83 Tawan Street, Shenyang City, 110854, China.
出版信息
J Forensic Sci. 2014 Sep;59(5):1403-9. doi: 10.1111/1556-4029.12410. Epub 2014 Mar 18.
Seals are often placed on important documents, and determining the date when a seal was affixed can be important to assess the authenticity of a document. In this study, thirty-seven different brands of stamp-pad inks and three different types of paper were used to make diachronic samples of the seals. The volatile components of stamp-pad ink were determined, and the stamp-pad ink was classified by gas chromatography with a flame ionization detector. Calibration curves were created to show the relationship between the content of volatile stamp-pad ink components and the age of stamp-pad ink entries stored under natural aging, UV-induced aging, and heating aging conditions. The experimental results showed that GC was useful in the analysis of stamp-pad ink and applicable for determining the relative age of stamp-pad ink entries in some cases where the seal was placed on the document within 3 months.
印章常被盖在重要文件上，确定印章加盖的日期对于评估文件的真实性可能很重要。在本研究中，使用了37种不同品牌的印台油墨和3种不同类型的纸张制作印章的历时样本。测定了印台油墨的挥发性成分，并采用带有火焰离子化检测器的气相色谱法对印台油墨进行分类。绘制了校准曲线，以显示挥发性印台油墨成分的含量与在自然老化、紫外线诱导老化和加热老化条件下储存的印台油墨痕迹的年龄之间的关系。实验结果表明，气相色谱法在印台油墨分析中很有用，并且在印章加盖在文件上3个月内的某些情况下，适用于确定印台油墨痕迹的相对年龄。
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