An experimental study about the presence of selenium in inorganic gunshot residues (GSR)

Molybdenum in Gunshot Residue: Experimental Evidences and Detection Challenges in the Presence of Lead and Sulfur

“…Elements constituting I-GSR mostly derive from primer mixture compounds of the discharged ammunition. The actual composition is a combination of primer mixture elements and other inorganic elements present in the firearm, derived from previously discharged ammunitions (Zeichner et al, 1991; Gunaratnam & Himberg, 1994; Harris, 1995) or from specific gun treatments (Romolo et al, 2017).…”

“…Case-specific known sources of GSR from the crime scene can be used for forensic interpretation of SEM/EDS results (Romolo & Margot, 2001; ASTM E1588, 2020). This approach is particularly useful when GSR contains unusual elements, such as chromium (Kazimirov et al, 2006), fluorine (Laflèche et al, 2018), samarium (Donghi et al, 2019), or selenium (Romolo et al, 2017).…”

Surface Analysis Techniques in Forensic Science: Successes, Challenges, and Opportunities for Operational Deployment

“…When this approach is followed, the evidence increases its strength in linking the suspect with a specific crime when unusual elements are found. An example is the presence in GSR of selenium (114) or molybdenum (115) due to the use of lubricants in firearms.…”

Interpol review of gunshot residue 2016–2019

“…Referring to different case analyses reporting the presence of Selenium in GSR particles, Romolo et al. conducted shooting tests with weapons treated with two different blueing agents (Super Blue® and Aluminum Black®) containing this element [ 7 ]. By using SEM/EDS analysis, the authors showed that the shots produced some particles containing Selenium.…”