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These methods follow the drying of solvents from ballpoint pen inks on paper and seem very promising.However, several questions arose over the last few years among questioned documents examiners regarding the transparency and reproducibility of the proposed techniques. Speckin // Association of Forensic Document Examiners 187. Review of ink dating methods: Is it possible to determine the age of a document through ink analysis? Inks Analysis by Capillary Electrophoresis Analytical Conditions Optimisation / J. Using TLC and GC-MS to determine whether inks came from the.
Inspired by a real investigation involving ink dating, the present paper discusses this particular issue throughout four main topics: aging processes, dating methods, validation procedures and data interpretation.
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Humecki // Proceedings of the International Symposium on Questioned Documents, FBI Academy, Quantico, VA, 1985.
SERRS Spectroscopy a new technique for forensic science?
After the determination of the limits of reliable measurements of the analytical method, the repeatability of the different ageing parameters was evaluated over time, as well as the influence of ink composition, writing pressure and storage conditions on the results.