title: The Effects of Burning and Mold Growth on the Chemical Composition of Firelog Fuels.
abstract: Firelogs consist of a cellulosic material, such as sawdust or wood particles, and a combustible binder (fuel). Historically, the fuel typically consisted of a petroleum-based (paraffin) wax; however, some manufacturers now include vegetable oils in their firelog fuels. To determine fuel composition, fuels from various brands of firelogs were extracted and analyzed by high-temperature gas chromatography-mass spectrometry (HTGC-MS) and a GC-MS with a polar column specific for the analysis of fatty acid methyl esters (FAMEs). Firelogs were also burned, allowed to grow mold, and analyzed by GC-MS to determine the effects that burning and mold growth have on firelog fuel composition. Mold did not tend to preferentially degrade any of the fatty acids. Burning caused a decrease in the relative amount of all of the fatty acids present in the vegetable oil fuel, with a greater effect on unsaturated fatty acids than saturated ones.
authors.affiliation: Virginia Commonwealth University, Department of Forensic Science, 1015 Floyd Avenue, Room 2015, Richmond, VA, 23284.
authors.forename: Kelsey
authors.initials: K
authors.lastname: Winters
authors.affiliation: Forensic Science Laboratory, Bureau of Alcohol, Tobacco, Firearms and Explosives, 6000 Ammendale road, Ammendale, MD, 20705.
authors.forename: Michelle
authors.initials: M
authors.lastname: Evans
keywords: fire debris; firelogs; forensic science; gas chromatography-mass spectrometry; petroleum products; vegetable oils