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                            Library & Multimedia
 Viable, Affordable, and Meaningful Integration of Organic and Inorganic Analysis of Firearms Discharge Residue
NCJ Number
              254404

Author(s)
          Suzanne Bell
Date Published

June 2019
Length
              11 pages
Annotation
              This is the Final Report on the findings and methodology of a project with the goal of developing protocols that integrate gunshot residue (GSR) and OGSR analysis in ways that can easily be implemented by forensic laboratories with existing resources, instrumentation, and expertise.
Abstract
              Information sources for this project were relevant literature reviews and selected findings from the project research group's previous research. Using the LC/MS method, researchers demonstrated that it is possible to detect IGSR and OGSR components from a single sample collected after the discharge of a single shot. A chromatographic method has been developed that enables the detection of the IGSR and OGSR compounds with separate injections on the same column, an Agilent Poroshell 120 PFP (2.7 mm x 2.1 mm x 50 mm, coupled with a Hamilton guard column, a PRP-X100 (2.1x50mm). The PFP is a relatively new perfluorobenzene phase that has shown the ability to separate many ionics and compounds amenable to reverse phase. This report advises that the proposed methodology could contribute to a revitalization of the analysis of firearm discharge residue (FDR) in the justice system. The instrumentation used is commonly available in forensic laboratories and is routinely used for toxicological assays. The loss of morphological information in the partial digestion methodology is offset by the ability to detect orthogonal data from the inorganic and organic constituents of FDR. The methodology is nearly ready to be deployed as a supplement to the existing scanning electron microscopy (SEM) methodology. 4 tables, 3 figures, and a listing of project dissemination products
      
  
          Additional Details
Grant Number(s)
        2015-DN-BXK048


  
  
        
  Agencies
        NIJ-Sponsored


  
  
        
  Publication Type
        Research (Applied/Empirical)
                                Report (Study/Research)
                                Report (Grant Sponsored)
                                Program/Project Description
    
  
  
Date Published: June 1, 2019
    
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