The Forensic Analysis of Pigments from Some Inks by HPTLC
2015
This paper aims to develop a simple, cheap, and reliable method for inks fingerprinting and authentication of questioned documents. The solutions of inks were prepared in ethanol. The analysis were done by high-performance thin-layer chromatography on silica gel 60 plates developed with a mixture of n-butanol–iso-propilic alcohol–water–acetic acid, 20:10:10:1 v/v/v/v as mobile phase. The paper also investigates the influence of some environmental factors that can alter the composition of ink from investigated document. The developed method proved to be a powerful, low cost, and simple tool that allowed discriminating between different inks.
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