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Updated: Jan 20, 2026

Preparation and Application of a New Bacterial Biosensor for the Presumptive Detection of Gunshot Residue
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Electrical Pulse Generated Upon Discharging a Firearm and Its Implication for Gunshot Residue Analysis

Ella Choban1, Tim Starn1

  • 1West Chester University of Pennsylvania, West Chester, PA, 19383.

Journal of Forensic Sciences
|August 15, 2019
PubMed
Summary

Gunshot residue (GSR) particles form from incomplete chemical reactions in ammunition primers. This study shows GSR generates electrical pulses, indicating non-neutral particles potentially formed by static electricity.

Keywords:
Coulombic repulsionelectrical dischargefirearmsforensic sciencegunshot residuescanning electron microscopy-energy-dispersive spectrometry

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