Complex expert research of the explosive products

Abstract

During the investigation of crimes aimed against the life of the person, collective and private property of citizens, law enforcement agencies often face the investigation into the explosion. The widespread use of explosion energy in the national economy and military affairs has resulted in large scale production of various explosives and explosive devices. In connection with this, a wide range of people have access to explosive materials. Inadequate controls over the storage and expenditure of explosives contributes to the growth of the facts of theft and misuse for criminal purposes. During carrying out of operatively-search actions and investigatory actions in the given category of criminal proceedings, there are various issues which require special knowledge in the field of chemistry and technology of explosives production, constructive peculiarities, the nature of the action and the method of manufacturing explosive devices on their basis. The definition of a type (brand) of explosives enables the investigating authorities to establish the source of its origin, scope and conditions for the use of explosive charges. For this purpose it is necessary to determine the chemical composition of explosives and percentages of components. The definition of the brand undermined by explosives is a difficult task. Most often the result of this study is to determine particular brand of individual explosives or explosive mixtures, in which incoming specific supplements. In other cases, given the likely conclusion, since the percentage ratio of the components of the explosive mixture is not always possible to determine. The above, together with the lack of new reference data on the composition of explosives, the universal methods of investigation nerdc leads to the fact that the definition of a type (brand) of explosives, particularly for the products of the explosion are often left without solutions. The analysis of expert practice study of explosives and explosion products is indicative of the wide use of explosive mixtures for industrial purposes such as аmmonites, ammonal, granulite, etc. In the article on the example of expert practice the technique a comprehensive expert study of explosion products. The discovery and study of the components of the explosive mixture and applied metal residues recovered from the explosion, was carried out using microscopic, chemical, thin-layer chromatography (TLC), infrared spectroscopy (IR), x-ray and metallographic methods.