RT journal article
T1 Novel method based on ion mobility spectrometry sum spectrum for the characterization of ignitable liquids in fire debris
A1 Aliaño González, María José
A1 Ferreiro González, Marta
A1 Fernández Barbero, Gerardo
A1 Palma Lovillo, Miguel
A2 Química Analítica
K1 Fire debris
K1 Ignitable liquids
K1 Characterization
K1 Ion mobility spectrometry
K1 sum spectrum
K1 Chemometrics
AB The destructive nature of fire together with a variety of interfering products from pyrolysis or background compounds among others, still offer a challenge on the proper identification of ignitable liquid residues (ILRs) in fire investigations. Nowadays, analysts use chromatography-mass spectrometry to try and classify ignitable li quids (IL) into one of the classes in the American Standards Testing Material method (ASTM E1618). In this study, an alternative approach is proposed to such analysis of fire debris. The proposed method would be based on ion mobility spectrometry sum spectrum (IMSSS) from headspace analysis, in combination with pattern recognition tools (Linear Discriminant Analysis, LDA). Four different substrates (pinewood, cork, paper, and cotton sheet) were burnt with and without different ILs (gasoline, diesel, ethanol, and paraffin). According to LDA, 100% of fire debris samples were correctly classified for presence/absence and type of IL. A characteristic fingerprint for each ILR was created for quick discrimination. These results demonstrate the potential of usingIMSSS for a fast, objective and easy interpretation of fire debris data. In addition, ion mobility spectrometry (IMS) presents some advantages over traditional techniques such as its real-time monitoring capability and its capacity to work at atmospheric pressure, which allow the development of portable devices that would perform the analysis at the fire scene.
PB ELSEVIER
SN 0039-9140
YR 2019
FD 2019
LK http://hdl.handle.net/10498/29971
UL http://hdl.handle.net/10498/29971
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 12-nov-2026