RT journal article
T1 Determination of Ignitable Liquids in Fire Debris: Direct Analysis by Electronic Nose
A1 Ferreiro González, Marta
A1 Álvarez, José A.
A1 Fernández Barbero, Gerardo
A1 Palma Lovillo, Miguel
A1 Ayuso Vilacides, Jesús
A1 García Barroso, Carmelo
A2 Química Analítica
A2 Química Física
K1 fire accelerants
K1 discrimination
K1 optimization
K1 E-nose
AB Arsonists usually use an accelerant in order to start or accelerate a fire. The most widely used analytical method to determine the presence of such accelerants consists of a pre-concentration step of the ignitable liquid residues followed by chromatographic analysis. A rapid analytical method based on headspace-mass spectrometry electronic nose (E-Nose) has been developed for the analysis of Ignitable Liquid Residues (ILRs). The working conditions for the E-Nose analytical procedure were optimized by studying different fire debris samples. The optimized experimentalvariables were related to headspace generation, specifically, incubation temperature and incubation time. The optimal conditions were 115  C and 10 min for these two parameters. Chemometric tools such as hierarchical cluster analysis (HCA) and linear discriminant analysis (LDA) were applied to the MS data (45–200 m/z) to establish the most suitable spectroscopic signals for the discrimination of several ignitable liquids. The optimized method was applied to a set of fire debris samples. In order to simulate post-burn samples several ignitable liquids (gasoline, diesel, citronella, kerosene, paraffin) were used to ignite different substrates (wood, cotton, cork, paper and paperboard). A full discrimination was obtained on using discriminant analysis. This method reported here can be considered as a green technique for fire debris analyses.
PB MDPI
YR 2016
FD 2016-05
LK http://hdl.handle.net/10498/20337
UL http://hdl.handle.net/10498/20337
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 06-nov-2026