V n aginsky dating and characterizing writing mixed dating sites

25-Nov-2017 21:19

The most promising approach for investigation of dye degradation processes at this time is the Raman spectroscopy method.Raman spectroscopy is a unique tool for the explicit analysis of any material [14].In this regard, spectral methods are the most effective ones; however, most of them have significant limits.Methods of attenuated total reflectance Fourier transform infrared spectroscopy (ART-FTIR) are also often used in this regard.

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All ingredients in the ink mixture can yield important analytical information to the forensic document examiner.

Thus, a variety of processes occurs simultaneously when writing inks are printed on paper.

Writing inks dry due to solvent evaporation; they get dull due to dye degradation and solidify due to resin polymerization.

The mutual influence of the volatile components and dyes of writing inks was also investigated and the time interval within which such influence is critical was found.

According to the obtained results, a new methodological scheme for determining the age of documents, which were created at least 40 months ago, was proposed.

All ingredients in the ink mixture can yield important analytical information to the forensic document examiner.Thus, a variety of processes occurs simultaneously when writing inks are printed on paper.Writing inks dry due to solvent evaporation; they get dull due to dye degradation and solidify due to resin polymerization.The mutual influence of the volatile components and dyes of writing inks was also investigated and the time interval within which such influence is critical was found.According to the obtained results, a new methodological scheme for determining the age of documents, which were created at least 40 months ago, was proposed.In turn, the most widespread solvents currently used are glycerol, tri-, tetra-, pentaethylene glycols, fenoxyetanol, phenoxyetoxy ethanol, benzyl alcohol, 2-pyrrolidone and butylene glycol [2,6].