Abstract
The most commonly used method for the analysis of ignitable liquid residues in fire debris samples is heated headspace sampling followed by GCMS analysis. The headspace can either be sampled directly, or via an adsorbent. Factors that may have an influence on the recovery of the ignitable liquid residue composition when headspace sampling is employed are: (i) temperature, (ii) extraction time/volume, (iii) type of adsorbent, (iv) adsorption capacity, and (v) the concentration of ignitable liquid. Fire debris experts must therefore know the limitations imposed by the recovery and analysis method(s) they employ, to avoid false positive identifications and/or erroneous classifications of the identified products.
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