ABS塑料制品烧残物对汽油分析鉴定的影响

The influence of ABS plastic products on gasoline analysis and identification

以空调外壳、汽车保险杠等ABS塑料制品和ABS原料为研究对象,利用固相微萃取-气相色谱质谱法(SPMEGC/MS)对不同燃烧状态下的样品进行分析,探究对纵火现场助燃剂汽油分析鉴定的影响。结果表明,完全燃烧的ABS塑料制品对汽油分析鉴定无影响;未燃烧和未完全燃烧的ABS塑料制品中检出与汽油中成分相同的C2、C3和C4烷基苯以及烷基萘类化合物,对汽油分析鉴定干扰较大。

Taking ABS plastic products such as air conditioner shells and automobile bumpers and ABS raw materials as research objects,solid phase microextractiongas chromatography-mass spectrometry(SPME-GC/MS)was used to analyze the samples under different combustion states,so as to explore the influence on the analysis and identification of ignition promoter gasoline on the arson site.The results show that the fully burned ABS plastic products have no effect on gasoline analysis and identification.C2,C3 and C4 alkyl benzene and alkyl naphthalene compounds with the same composition as gasoline were detected in unburned and incomplete burned ABS plastic products,which caused great interference to gasoline analysis and identification.