Abstract: With more than 10 kinds of wood products such as oak floor and wood table as the research objects, SPME-GC /MS and SPME-GC×GC/MS were used to analyze the body samples of wood products and explore their influence on the analysis and identification of combustion-supporting agent gasoline at the scene of arson. The results showed that C2, C3, C4 alkyl benzene and alkyl naphthalene compounds, which were exactly the same as those in gasoline, were detected by SPME-GC/MS in the real wood table body samples. SPME-GC×GC/MS technique was used to analyze the solid wood table body samples with large gasoline interference, and the results of comparative analysis were given, which eliminated the interference of such samples on the gasoline analysis with high accuracy.

Key words: wood products, SPME/GC/MS, GC×GC/MS, gasoline, fire investigation