PMID- 38362839 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20240425 IS - 1556-4029 (Electronic) IS - 0022-1198 (Linking) VI - 69 IP - 3 DP - 2024 May TI - Screening of volatiles from explosive initiators and plastic-bonded explosives (PBX) using headspace solid-phase microextraction coupled with gas chromatography - mass spectrometry (SPME/GC-MS). PG - 847-855 LID - 10.1111/1556-4029.15487 [doi] AB - The detection of explosives and explosive devices based on the volatile compounds they emit is a long-standing tool for law enforcement and physical security. Toward that end, solid-phase microextraction (SPME) combined with gas chromatography-mass spectrometry (GC-MS) has become a crucial analytical tool for the identification of volatiles emitted by explosives. Previous SPME studies have identified many volatile compounds emitted by common explosive formulations that serve as the main charge in explosive devices. However, limited research has been conducted on initiators like fuses, detonating cords, and boosters. In this study, a variety of SPME fiber coatings (i.e., polydimethylsiloxane (PDMS), polydimethylsiloxane/divinylbenzene (PDMS/DVB), divinylbenzene/carboxin/polydimethylsiloxane (DVB/CAR/PDMS), and carboxin/polydimethylsiloxane (CAR/PDMS)) were employed for the extraction and analysis of volatiles from Composition C-4 (cyclohexanone, 2-ethyl-1-hexanol, and 2,3-dimethyl-2,3-dinitrobutane (DMNB)) and Red Dot double-base smokeless powder (nitroglycerine, phenylamine). The results revealed that a PDMS/DVB fiber was optimal. Then, an assortment of explosive items (i.e., detonation cord, safety fuse, slip-on booster, and shape charge) were analyzed with a PDMS/DVB fiber. A variety of volatile compounds were identified, including plasticizers (tributyl acetyl citrate, N-butylbenzenesulfonamide), taggants (DMNB), and degradation products (2-ethyl-1-hexanol). CI - (c) 2024 The Authors. Journal of Forensic Sciences published by Wiley Periodicals LLC on behalf of American Academy of Forensic Sciences. FAU - Hecker, Alexis J AU - Hecker AJ AD - Department of Chemistry & Chemical Biology, Indiana University - Purdue University Indianapolis, Indianapolis, Indiana, USA. FAU - Goodpaster, John V AU - Goodpaster JV AD - Department of Chemistry & Chemical Biology, Indiana University - Purdue University Indianapolis, Indianapolis, Indiana, USA. AD - Forensic & Investigative Sciences Program, Indiana University - Purdue University Indianapolis, Indianapolis, Indiana, USA. LA - eng PT - Journal Article DEP - 20240216 PL - United States TA - J Forensic Sci JT - Journal of forensic sciences JID - 0375370 SB - IM OTO - NOTNLM OT - CGMS OT - SPME OT - explosives OT - gas chromatography mass spectrometry OT - headspace analysis OT - solid phase microextraction EDAT- 2024/02/16 06:43 MHDA- 2024/02/16 06:44 CRDT- 2024/02/16 05:53 PHST- 2024/01/25 00:00 [revised] PHST- 2023/08/16 00:00 [received] PHST- 2024/01/26 00:00 [accepted] PHST- 2024/02/16 06:44 [medline] PHST- 2024/02/16 06:43 [pubmed] PHST- 2024/02/16 05:53 [entrez] AID - 10.1111/1556-4029.15487 [doi] PST - ppublish SO - J Forensic Sci. 2024 May;69(3):847-855. doi: 10.1111/1556-4029.15487. Epub 2024 Feb 16.