Gunshot Residue Tests

Errors in gunshot residue assessment by scanning electron microscopy/ elemental analysis in criminal cases: III. Friction-brake particles assigned as “highly specific” gunshot residue particles

Automated scanning electron microscope analyses of gunshot residue samplers are being performed by many crime laboratories all over the world. Often the criminalist-technician operators of these instruments do not have adequate training for the interpretation of spectra generated by energy dispersive X-ray spectroscopy (parts I and II of this series) and distinguishing gunshot residue from simi...

Free Lead Particles Associated with Keys

The defendant was accused of the shooting death of his wife. Police administered gunshot residue samplers to the defendant's hands and objects that he likely came into contact during the interval from the shooting to his arrest. The examination of the samplers by scanning electron microscopy/energy dispersive X-ray spectroscopy (SEM/EDS) showed no particles of potential gunshot residue, except ...

Laser-induced breakdown spectroscopy for the detection of gunshot residues on the hands of a shooter.

Laser-induced breakdown spectroscopy (LIBS) has been used to determine whether the hands of a suspected gun user contain traces of gunshot residue. Samples are obtained by pressing adhesive tape against the skin of the suspect and analyzing the tape directly. When the suspect has fired multiple shots, or if the gun has not been cleaned, the gunshot residue provides a spectral signature that is ...

Evaluation of Cryofocusing Capillary Microextraction of Volatiles for Improved Detection of Organic Gunshot Residue on the Hands of Shooters

The importance of victim’s clothes in gunshot wounds

Objective: Determination of victim’s clothes in gunshot wounds is important due to the necessity of immediate workup in the emergency room as well as the legal aspects of cases. The aim of this study is to evaluate the importance of victim’s clothes in gunshot wounds referred to autopsy hall of legal medicine bureau of Tehran, Iran from 2014 to 2017.Methods: In this analytical comparative...