用SPME/GC-MS方法检验涉火案件中痕量汽油残留物成分

在纵火、爆炸、凶杀等刑事案件中,经常会遇到痕量汽油残留组分的检验与认定。汽油主要由C12以前的烷烃、烯烃、环烷烃和芳香烃化合物组成。由于涉火案件现场中燃烧介质及其中所含汽油的燃烧时间和燃烧程度都不尽相同,那么残留在介质中的汽油组分多少及轻重组分相对含量会产生较

Determination of Trace Gasoline Residual in the Arson Scene by SPME/GC-MS

Trace gasoline residual analysis and identification is often applied in criminal analysis of arson,explosion,murder e.g..We analysis the trace gasoline in medium with SPME and GC-MS,that can identify the trace gasoline residual exactly through analyzing the mass spectrum of chromatogram peaks characters of alkenes,alkyl benzene,indene compounds,and naphthyl compounds,which are from the medium and burning medium.