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Volume 25 - ICOP & ICPET 2019
ICOP & ICPET _ INPC _ ICOFS 2019, 25 - ICOP & ICPET 2019: 917-920 |
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Arefi A, Tavassoli S H. Application of Raman spectroscopy in examination of black pen inks for authentication of documents . ICOP & ICPET _ INPC _ ICOFS 2019; 25 :917-920
URL: http://opsi.ir/article-1-1751-en.html
URL: http://opsi.ir/article-1-1751-en.html
1- Laser and Plasma Research Institute, Shahid Beheshti University, G. C., Evin, Tehran
Abstract: (2081 Views)
Forensic examinations of questioned documents routinely involve physical and chemical analysis of inks. Raman spectroscopy is a very attractive technique for ink analysis. However, this technique has some limitations including low sensitivity and the overwhelming phenomenon of fluorescence. In this research, this problem has been solved for a portion of the spectrum by baseline correction. This paper aims to demonstrate the potential of Raman-based techniques for examination of some black inks. For this purpose, at first, the repeatability of black ballpoint pen inks spectra have been examined and then the inks have been discriminated from each other. The results show that this technique is able to distinguish all five samples.
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