Detection of Gunshot Residues Using Mass Spectrometry
- Hindawi Publishing Company
- Publication Type:
- Journal Article
- BioMed Research International, 2014, 965403 pp. 1 - 16
- Issue Date:
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In recent years, forensic scientists have become increasingly interested in the detection and interpretation of organic gunshot residues (OGSR) due to the increasing use of lead- and heavy metal-free ammunition. This has also been prompted by the identification of gunshot residue- (GSR-) like particles in environmental and occupational samples. Various techniques have been investigated for their ability to detect OGSR.Mass spectrometry (MS) coupled to a chromatographic system is a powerful tool due to its high selectivity and sensitivity. Further,modernMS instruments can detect and identify a number of explosives and additives whichmay require different ionization techniques. Finally,MS has been applied to the analysis of bothOGSR and inorganic gunshot residue (IGSR), although the gold standard for analysis is scanning electron microscopy with energy dispersive X-ray microscopy (SEM-EDX). This review presents an overview of the technical attributes of currently available MS and ionization techniques and their reported applications to GSR analysis.
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