A COMPARISON OF SHAPE, DIMENSION, AND QUANTITY OF GSR PARTICLES AFTER FIRING BLANK CARTRIDGE AND LIVE AMMUNITION USING SEM-EDX TECHNIQUE
Keywords:
Gunshot residue (GSR), Live Ammunition, Blank CartridgeAbstract
This research aims to: 1) compare gunshot residue after firing blank cartridge and live ammunition
using Scanning Electron Microscopy (SEM) techniques, and 2) compare the amount of gunshot residue after firing blank cartridge and live ammunition using Energy Dispersive X-ray (EDX) techniques. The experiment involves shooting a 9 mm. handgun and a blank gun to collect gunshot residue samples on the shooter's hand at 0 and 30 minutes. The analysis includes particle analysis, examination of gunshot residue size, and the detection of Lead (Pb), Barium (Ba), and Antimony (Sb) amounts. The results of the research found that gunshot residue particles from live ammunition are more spherical than gun soot particles from blank cartridges, and over time, the characteristics of gunshot residue change from being spherical. The particle size of gunshot residue from live ammunition means 13.017 ± 11.412 microns, while the particle size of gunshot residue from blank cartridges means 10.567 ± 10.007 microns, and an examination of the elemental components in gun soot after 30 minutes, gun soot from live ammunition will have a reduced amount of elements. Meanwhile, the amount of elemental elements in gun soot from blank cartridges decreased not as clearly as from live ammunition. From the results of this research, it can be concluded that the SEM-EDX technique can be applied to analyze the shape of gunshot residue from both live ammunition and blank cartridges. And to use it as a database for forensic science practitioners.
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