Detection of fragments of an obstacle and a projectile in a gunshot injury

Abstract

The article describes a case from expert practice that demonstrates the possibility of establishing the presence of barrier particles on surrounding objects in the case of a gunshot injury to a person. In the case under consideration, the detection of fragments of an obstacle (triplex the windshield of a car) played a leading role in proving the suspect's involvement in the incident under investigation. Violations of the expert method of particle removal and evaluation of the obtained data, which contributed to the drawing of incorrect conclusions in the expert's conclusion, are described. The possibilities of modern scanning electron microscopy and energy dispersion analysis are described, which make it possible to establish not only the presence of barrier particles on environmental objects, but also to identify signs of gunshot damage to human clothing and body, destroyed projectile particles, as well as to establish the elemental composition of all detected microparticles.