The Study on Volatility of Gasoline in Soil Matrix

Identification of accelerants in fire debris evidence can be difficulty due to evaporation of the liquid, matrix interferences, and thermal degradation of both the liquid and the matrix. In this work, 1 ml gasoline was spiked onto 10 g soil matrix (5pieces). The ignitable liquid residues were extracted using 30 ml Hexane and analyzed by gas chromatography-mass spectrometry and the interpretation of the instrumental signal. Of the four samples tested, the most compounds in gasoline are not detected from soil matrix after 7days except Naphthalene, Naphthalene-C1/C2/C3 and Benzene, pentamethyl-.