The evaluation of solid phase micro-extraction fibre types for the analysis of organic components in unburned propellant powders.

摘要: This work describes the evaluation of various solid phase micro-extraction (SPME) fibre types for detection compounds originating from particles unburned propellant powders. These may also be found in association with organic gunshot residues (OGSR). Seven SPME fibres were assessed based on their ability to extract interest (diphenylamine (DPA), 4-nitrodiphenylamine (4-NDPA), ethyl centralite (EC), nitroglycerin (NG) and dibutyl phthalate (DBP)) four ammunition across three calibres (9 mm, 5.56 mm 7.62 mm). Extracts analysed by gas chromatography/mass spectrometry (GC/MS). Results indicated that 65 μm polydimethylsiloxane/divinylbenzene (PDMS/DVB) was most suitable type extraction these tested. Optimal time parameters a 35-min period determined suitable. A number previously unreported considerations extracting powders potentially OGSR related materials are discussed.