Title

The Occurrence of False Positive Tests for Gunshot Residue Based on Simulations of the Suspect's Occupation

Department

Chemistry & Biochemistry

Document Type

Article

Publication Date

Summer 7-1-2011

Abstract

Samples collected from high-risk occupations, or simulations thereof, are analyzed for elemental composition using laser-induced breakdown spectroscopy (LlBS) to determine the occurrence of false positive gunshot residue results generated in the work environment. Previous work involving the study of lifetime of detectable amounts of gunshot residue on the hands of a suspect shooter found that gunshot residue exists up to 5.27 days after a firearm discharge. However, certain environmental and/or occupational false positive tests for gunshot residue could result when sampling non-shooters. Samples collected from occupations or simulations thereof include welding, pyrotechnics, key cutting, mechanics, and paper products all of which produced significant false positive results for gunshot residue.

Journal

Journal of Undergraduate Chemistry Research

Journal ISSN

1541-6003

Volume

10

Issue

3

First Page

107

Last Page

110