METHOD FOR DETERMINING THE TIMING OF APPLICATION HANDWRITTEN inscription on the document by means of chromatography and spectroscopy RAMAN SAMPLE DYES under radiation with a wavelength of 785 or 532 nm

摘要

A method of determining the timing of application of handwritten labels on documents by means of chromatography and spectroscopy Raman dye samples when exposed to radiation with a wavelength of 785 or 532 nm, the database available strokes writing pens formulations with different term application to paper, characterized in that the writing compositions separated into two types of a with characteristic peaks intensity 1264 media 1334 media with characteristic peaks in the intensity of the 1580 cm media 730, then select the optimal irradiation power A writing type A compounds, equal to 10 mW at a wavelength of 785 nm radiation, and the optimum irradiation power for writing type compositions in irradiation at a wavelength of 532 nm of 2 mW; then determine the timing relationship according to types of writing compositions intensities of characteristic peaks A and B; GC analysis is then carried out in the presence of the writing part of 2-ethylhexanol, 2-phenoxyethanol and benzyl alcohol is then carried out determination of the ratio of the intensities of the characteristic peaks for the sample on the basis of the data determined by the gas chromatographic study of the calibration curve of the Raman scattering spectra of the real time writing of manufacture.