NA-EDS-GSR-枪击残留物
Gunshot residue (GSR) is produced from the condensation of the vapour cloud which is generated fromthe primer and propellant when a bullet is fired from a gun. The condensing vapour from the primer willform particles which are typically spherical and range from potentially less than 0.5 μ m up to significantlylarger sizes and of a characteristic composition depending on the type of ammunition. These particlesmay land on the hands and body of the shooter or other persons present when the gun was fired. Bycollecting and identifying these particles it is possible to associate a person with a crime scene where agun was used