New medico-legal opportunities for recognition of a blunt object which caused deadly motor vehicle injury in wheel cross-moving

Abstract

Forensic-medical examination of injured car accident victim has a great relevance. Especially difficult is a car injury of wheel moving through the human body. In situations, where the driver was guilty, had left place of an accident and neither the trace from the tread nor sidesurface of the tire tread were visually visible on the victim’s body or clothing, the experts did not have sufficient reliable signs to determine a type and mass of the car. We assumed that, as a result of moving the car wheel, we’ll observe on the victim body and clothing of specific elements from different kinds of rubber tier. We used spectral methods (XRF spectrometry and ESA). There is evidence discerned, that in the damaged part of the victim’s body and clothing, there is a contamination — chemical elements of the rubber composition: zinc, iron, aluminum, calcium, silicon, magnesium and manganese because of the moving wheel of the car. In experiments with imitators of human tissues and clothing an amount of metal “transferred” to them from tires of an automobile or truck was established. An example of a practical application of the new knowledge is a commission forensic medical expertise.