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Information × Registration Number 0225U002758, (0122U200204) , R & D reports Title Development of a methodology for establishing changes in the chemical composition of coloring substances over time when crossing details popup.stage_title Розробка методики встановлення змін хімічного складу барвних речовин у часі при наявності перетину реквізитів Head Posilskyi Oleh O., Кандидат хімічних наук Registration Date 02-04-2025 Organization Kyiv Research Institute of Forensic Science of the Ministry of Justice of Ukraine popup.description1 The aim of the work is a methodology for a comprehensive study of the chemical composition of colouring substances (ballpoint pen paste, stamp ink and inkjet printers) in their strokes in the presence of intersection of details in documents and to determine the ageing kinetics of the substances under study by changes in the relative content of their volatile components using the spectrum. methods of analysis, establishing signs of the influence of extraneous factors on the document, the influence of factors that led to the appearance of signs of artificial ageing of documents on the results of the study of the chemical composition of colourants. popup.description2 The research considered topical issues related to determination of dating for document execution, namely, a comprehensive study of changes over time in the dyes of requisite strokes (ballpoint pen pastes, gel pen inks, stamp inks, inkjet printer inks, etc.) by using chromatographic and spectroscopic analysis methods. Based on the conducted research, a methodology was developed for establishing the absolute age of execution of document requisites in the presence of an intersection of requisites. Special attention is deserved by the newly proposed non-destructive method for studying the age of execution of document requisites using Raman spectroscopy, which is based on the analysis of dye degradation.  Product Description popup.authors Artamonova Hanna V. Venhrus Anfisa Yu. Venhrus Vitalii V. Klymenko Anatolii V. Kovalchuk Liudmyla I. Likhvar Taras O. Maliei Olena S. Prystupa Volodymyr V. Savenok Ostap S. popup.nrat_date 2025-04-02 Close