各種床材の残焼物における石油系液体燃料残留分の経時的組成変化とGC/MSによる検出可能期間

抄録

 Time-dependant change in compositions of ignitable liquid residues (ILRs) from fire debris samples prepared from three common flooring materials (i.e., wood flooring, carpet on wood flooring, and tatami) burned with gasoline or kerosene were examined, and their detectable periods were evaluated in gas chromatography with mass spectrometry (GC/MS) analysis with NeedlEx^®.

 The results revealed that the type of flooring material affected the compositions and evaporation rates of each ILR. Whereas ILRs from debris burned with gasoline showed different compositions from a simply evaporated gasoline reference, ILRs from debris burned with kerosene showed considerable similarity to the evaporated kerosene reference. The detectable periods of dynamic headspace extraction revealed in GC/MS analysis with NeedlEx^® also far exceeded the periods of detector tubes.