serval:BIB_20A7C79BB124
Combined Collection and Analysis of Inorganic and Organic Gunshot Residues.
10.1111/1556-4029.14314
000544405600008
32181891
Redouté Minzière
V.
author
Werner
D.
author
Schneider
D.
author
Manganelli
M.
author
Jung
B.
author
Weyermann
C.
author
Gassner
A.L.
author
article
2020-07
Journal of forensic sciences
1556-4029
0022-1198
journal
65
4
1102-1113
Gunshot residue (GSR) analysis and their interpretation provide crucial information on a criminal investigation involving the use of firearms. To date, several approaches have been proposed for the implementation of a combined sampling and analysis of inorganic (IGSR) and organic GSR (OGSR). However, it is not clear at this stage if concurrent analyses of both types of residue might be detrimental to the analysis of IGSR currently applied in forensic laboratories. Thus, this work aims to compare and evaluate three different protocols for the combined collection and analysis of IGSR and OGSR. These methods, respectively, involve the use of a modified stub (with two halves, one for the detection of IGSR and the other for the analysis of OGSR); the sequential recovery of GSR with two stubs mounted with different adhesives (double-sided carbon tape and Tesa® TACK) and the sequential analysis of IGSR and OGSR from a single carbon stub following carbon deposition. The detection of IGSR was carried out using SEM-EDX, while OGSR analysis was performed using ultra-high-performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS). Obtained results for experiments performed using Geco Sinoxid <sup>®</sup> ammunition indicated that sequential analysis was the most suitable protocol for the combined collection and analysis of both IGSR and OGSR. A higher number of inorganic (characteristic and consistent) particles and higher concentrations of ethylcentralite, N-nitrosodiphenylamine, diphenylamine, and nitroglycerin were recovered with this method.
firearm discharge residue
inorganic gunshot residues
organic gunshot residues
scanning electron microscopy–energy-disper-sive x-ray spectroscopy (SEM-EDX)
liquid chromatography
mass spectrometry
scanning electron microscopy-energy-dispersive x-ray spectroscopy (SEM-EDX)
eng
60_published
SNF//10521A_165608
SNF//105211_188898
true
peer-reviewed
Publication types: Journal Article
Publication Status: ppublish
University of Lausanne
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