Gunshot Residue Analysis on different clothes by Scanning Electron Microscope/Energy Dispersive X-ray Spectroscopy (SEM/EDS)

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ณรงค์ กุลนิเทศ

Abstract

The purposes of this research were to analyze the persistence of gunshot residue on clothing after shooting. The weapon used in this workwas a M16A1 with 5.56 mm. ammunition. The samples of this study was collected after shooting 15 shot on different types of clothing: polo-shirt, jacket, shirt, and T-shirt before and after washing. The samples were analyzed by scanning electron microscopy/Energy Dispersive X-ray Spectroscopy (SEM/EDS) to measure amounts percentage of barium, lead and antimony.
The research findings were as follows:
1) The study of gunshot residue particles on clothing after shooting before and after washing.The gunshot residue on Jacket is most stable and structure, practical gunshot residue on T-shirt is least stableand structure.
2) The quantitative comparison of gunshot residue on various types of clothing before and afterwashing was investigated. The greatest amountof barium, lead and
antimony that’s still on jacket was 80.23%. The Smallest amount of gunshot residues was 18.15% that’s on the shirt.


There is a correlation between the two set of results. However, The scanning
electron microscopy/EnergyDispersiveX-ray Spectroscopy (SEM-EDS)is an alternative
method for the examination of the persistence of gunshot residue.
Keywords : Gunshot Residues (GSR), Clothes, Scanning Electron Microscopy/Energy
Dispersive X-ray Spectroscopy (SEM/EDS)

Article Details

How to Cite
กุลนิเทศ ณ. (2015). Gunshot Residue Analysis on different clothes by Scanning Electron Microscope/Energy Dispersive X-ray Spectroscopy (SEM/EDS). Journal of Criminology and Forensic Science, 1(1), 23–30. retrieved from https://so02.tci-thaijo.org/index.php/forensic/article/view/185212
Section
Research Articles

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