A study of transfer and prevalence of organic gunshot residues

Chemical analysis of gunshot residues (GSR) can provide useful information for the reconstruction of events involving the use of firearms. This could include linking a person to such an event, an estimation of shooting distance and trajectory, bullet entry and exit point identification or simply determining the circumstances of a case and verifying the veracity of a testimony [1–3]. Additional information concerning the type of firearm and ammunition used as well as the time since discharge can also be useful [4–7].

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