Journal
FORENSIC SCIENCE INTERNATIONAL
Volume 158, Issue 2-3, Pages 164-172Publisher
ELSEVIER IRELAND LTD
DOI: 10.1016/j.forsciint.2005.04.044
Keywords
inks examination; micro-FTIR spectroscopy; Raman spectroscopy; XRF
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In routine examination of inks on questioned documents non-destructive analytical methods, such as microscopic and optical techniques are applied first. However, they are often insufficient to identify the inks used for the preparation of the document. In such cases, it is necessary to apply chemical methods that normally cause partial destruction of the examined material. The aim of this work was to evaluate the possibility of discrimination between inks by the use of spectrometric methods, i.e. micro-FTIR spectroscopy, Raman spectroscopy and XRF. About 70 samples of blue and black ballpoint pen and gel inks were examined. It was found that about 90% of the samples of the same type and colour could be distinguished using these methods. (c) 2005 Elsevier Ireland Ltd. All rights reserved.
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