Barium is one of three metals, in conjunction with antimony and lead, used for identification of gunshot residue (GSR) on a person's hands. Differential pulse anodic stripping voltammetry has been applied for characterization and quantitative detection of these metals from gunshot residue. Previous electrochemical methods have detected either, antimony and lead, or barium and lead. Improved detection of barium from GSR is the focus of this research. The development of this method will be discussed. Included is the use of different electrolyte solutions (LiClO4 and tetraethylammonium bromide) at different concentrations. Other differential pulse parameters, such as, pulse amplitude, scan rate, and deposition time will be discussed. The goal of the research is to provide a simple non-destructive method for determination of Ba from GSR.

Stripping voltammetry for the detection of barium from gunshot residue

245th National Meeting (2013)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.