Determination of liquid accelerants in arson suspected fire debris using headspace solid-phase microextraction

摘要: A new method for the detection of selected flammable liquid accelerants from arson-suspected fire debris has been developed using headspace solid-phase microextraction (SPME). Two different techniques were used to validate SPME method. Preliminary was carried out by extracting small amounts gasoline or barbecue lighter fluid spiked onto pre-burnt carpet wood with subsequent analysis GC–FID. Alternatively, accelerant burnt and GC–ion-trap mass spectrometry performed on residue. The FID ion current chromatograms determine a visual correlation so that presence components are commonly found in petroleum-based could be confirmed. Headspace capable detecting trace sample obtained real fire, while conventional extraction methods, such as static headspace, lacked adequate sensitivity not detected.