Analysis of Luminescent Gunshot Residue (LGSR) on Different Types of Fabrics

The collection of gunshot residue on fabric can be an arduous task due to the microscopic size of particles (blind collection) and sheddability of some fabrics. The introduction of luminescent markers and consequent formation of luminescent gunshot residue (LGSR) can facilitate this analysis. In thi...

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Published in:Journal of forensic sciences 2020-01, Vol.65 (1), p.67-72
Main Authors: Arouca, Aline M., Lucena, Marcella A. M., Rossiter, Rafael J., Talhavini, Márcio, Weber, Ingrid T.
Format: Article
Language:English
Subjects:
ammunition tagging
Collection
Fabrics
Firearm discharge residue
forensic science
gunshot residue
lead free ammunition
luminescent marker
non‐toxic ammunition
Projectiles
sheddability
Shootings
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container_title Journal of forensic sciences
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creator Arouca, Aline M.
Lucena, Marcella A. M.
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Weber, Ingrid T.
description The collection of gunshot residue on fabric can be an arduous task due to the microscopic size of particles (blind collection) and sheddability of some fabrics. The introduction of luminescent markers and consequent formation of luminescent gunshot residue (LGSR) can facilitate this analysis. In this study, different fabrics were analyzed in order to verify the persistence of the LGSR on them, the possibility of collecting and analyzing particles by video spectral comparator (VSC) and SEM/EDS. Also, different colored fabrics were used as targets in order to investigate influence of fabric color on LGSR visualization. Furthermore, the influence of the fabric type in the distribution of the LGSR deposited around the projectile´s hole entrance was evaluated. The fabric sheddability did not alter collection of the particles or analysis. It was possible to observe and collect LGSR on all tested fabrics, even after the fabric had been shaken, or in colored fabrics.
doi_str_mv 10.1111/1556-4029.14143
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subjects ammunition tagging
Collection
Fabrics
Firearm discharge residue
forensic science
gunshot residue
lead free ammunition
luminescent marker
non‐toxic ammunition
Projectiles
sheddability
Shootings
title Analysis of Luminescent Gunshot Residue (LGSR) on Different Types of Fabrics
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