Effects of several typical plastic combustion residues on gasoline

Lili Yu, E Dazhi, Shujun Liu
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引用次数: 0

Abstract

In order to solve the interference caused by polymer materials on gasoline accelerants in arson cases, the characteristics of residues after combustion of some typical plastics are studied. Comparing it to the combustion residue of gasoline, we discussed the interference in gasoline detection. The results show that the combustion products of these plastics mainly interfere with the alkanes and aromatic hydrocarbons in gasoline. Polyethylene, polystyrene, and polyvinyl chloride mainly produce C9-C16 branched-chain and straight-chain alkanes. Polystyrene and ABS resin generated C5 and C6 alkanes, also generated C1-benzene, C2 - benzene, and styrene. It mainly affects the identification of aromatic hydrocarbons in gasoline combustion residues. Understanding the types and characteristics of products in the combustion residues of these plastics can provide powerful evidence for fire investigators and criminal technicians in physical evidence identification.
几种典型塑料燃烧残留物对汽油的影响
为了解决纵火案中高分子材料对汽油助燃剂的干扰,研究了一些典型塑料燃烧后残留物的特征。将其与汽油燃烧残留物进行比较,讨论了其对汽油检测的干扰。结果表明,这些塑料的燃烧产物主要干扰汽油中的烷烃和芳香烃。聚乙烯、聚苯乙烯和聚氯乙烯主要产生 C9-C16 支链和直链烷烃。聚苯乙烯和 ABS 树脂会产生 C5 和 C6 烷烃,还会产生 C1-苯、C2-苯和苯乙烯。它主要影响汽油燃烧残留物中芳香烃的鉴定。了解这些塑料燃烧残留物中产物的类型和特征,可为火灾调查人员和刑事技术人员提供有力的物证鉴定证据。
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