| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 6551804 | Forensic Science International | 2016 | 9 Pages |
Abstract
This study aimed at developing a LC-MS method to compare the efficiency of various sampling materials for the collection and subsequent analysis of organic gunshot residues (OGSR). Seven sampling materials, namely two “swab”-type and five “stub”-type collection materials, were tested. The evaluation of sampling materials was systematically carried out by first analyzing blank extracts of the materials to check for potential interferences and determining matrix effects. Based on these results, the best four materials, namely cotton buds, polyester swabs, a tape from 3Â M and PTFE were compared in terms of collection efficiency during shooting experiments using a set of 9Â mm Luger ammunition. It was found that the tape was capable of recovering the highest amounts of OGSR. As tape-lifting is the technique currently used in routine for inorganic GSR, OGSR analysis might be implemented without modifying IGSR sampling and analysis procedure.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Anne-Laure Gassner, Céline Weyermann,