Tandem detection of organic and inorganic gunshot residues using LC-MS and SEM-EDS
Callum Bonnar, Eliza C Moule, Nick Lucas, Kelsey E Seyfang, Robert P Dunsmore, Rachel S Popelka-Filcoff, Kahlee Redman, K Paul Kirkbride
Forensic Science International | ELSEVIER IRELAND LTD | Published : 2020
Gunshot residue (GSR) is a valuable form of forensic trace evidence in the investigation of firearms crime. The current gold-standard approach does not include the analysis of organic components of the residues, which may be a deficiency, particularly in cases where there is little to no inorganic gunshot residue (IGSR) present or its attribution to a firearm source is ambiguous. A solvent extraction method was used for the extraction of organic GSR (OGSR) from the most common sampling device used to collect IGSR (i.e., SEM stubs with double-sided carbon adhesive tape). It was found that extraction did not significantly disturb inorganic GSR present on stubs, which raises the possibility tha..View full abstract
Research relating to this article was supported by a Premier's Research and Industry Fund grant provided by the South Australian Government Department of Further Education, Employment, Science and Technology and the Ross Vining Research Fund, which is administered by Forensic Science SA.The authors acknowledge the expertise, equipment, and support provided by the Australian Microscopy and Microanalysis Research Facility (AMMRF), the Australian National Fabrication Facility (ANFF), and ChemCentre Western Australia (CCWA).We are extremely grateful for the support provided to this research by SA Police, and in particular Brevet Sergeant Andrew Plummer, PhD.