Abstract
A method is presented for the detection of severely weathered petrol residues in post-fire debris. The procedure involves the splitting of the capillary gas chromatographic (GC) column effluent between a flame ionisation detector and a Hall electrolytic conductivity detector to obtain the hydrocarbon and identify petrol burned on cotton wood and weathered for 12 days. Positive identifications have been obtained by this method when applied to samples from cases of suspected arson where the GC-flame ionisation detection interpretations were inconclusive.
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