Some issues of application of special knowledge in the course of investigation of crimes related to illegal drug trafficking are considered. Analyzed the scientific literature, regulatory legal acts devoted to the use of special knowledge in the study of narcotic drugs, psychotropic substances and precursors. The statistical data of the Office of the Prosecutor General of Ukraine are presented, indicating a significant increase in the level of drug-related crime in Ukraine. The increase in the number of drug-related crimes entails an increase in the need for the use of special knowledge in their investigation. In the process of applying special knowledge, a number of problematic issues arise that require legislative solutions. The purpose of the article is to identify theoretical and organizational problems arising in the process of applying special knowledge in the investigation of crimes related to drug trafficking. Attention was drawn to the project “Action — EU: EU Action on Drugs and Organized Crime. Intensive cooperation and capacity building to combat organized drug trafficking along the heroin route. ” Under the auspices of this project, the Ukrainian Working Group for the Study of Psychoactive Substances was formed, one of the main goals of which is to improve the quality of forensic services in Ukraine, and one of the main forms of work is to conduct interlaboratory exercises. The results of participation in an interlaboratory exercise provide an opportunity to either confirm the performance of a particular laboratory, or indicate problems in such a laboratory. For the examination of narcotic drugs, psychotropic substances and precursors, access to comparative (standard) samples is required, the free receipt of which (or their exchange between institutions) is complicated by many factors.
Grape and fruit and berry wines were studied in order to detect signs of their falsification by adding synthetic dyes. It is noted that in the process of analysis (examination) of unknown liquids provided for research, specialists must first of all establish the nature of such objects. It is possible to find out only after identifying the spectrum of features characteristic of the object in its actual state. The list of organic acids, which are components of grape and fruit and berry wines, was established experimentally; the possibility of determining organic acids in the analyzed samples was proven; signs of falsification of wines with the addition of dyes were given and methods of their detection were proposed. One of the cornerstone requirements for forensic examination is the mandatory confirmation of the results of analysis by at least two reliable methods, therefore, in the proposed scientific research, options for the study of some synthetic dyes using methods of thin- layer chromatography, IR spectroscopy and the addition of alkaline solutions are considered. It was established that the set of specific organic acids in grape and fruit and berry wines, which can be detected using the chromatography method, makes it possible to use them as differential signs in the process of establishing the nature of the wine. Samples of real grape wines are marked by a high concentration of tartaric acid, which is present only in grape products. It has been proven that the set of methods for studying grape and fruit and berry wines, aimed at determining the presence and identification of synthetic dyes, makes it possible to answer the questions posed by the examination on the falsification of winemaking products by coloring.
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