放火火灾中酸化汽油残留物检测研究现状

Research Status of Acidified Gasoline Residue Detection in Arson Fire

酸化汽油是近几年新出现的一种助燃剂,其由浓硫酸与汽油混合而成,混合后会生成新的组分,特征成分与普通汽油较为相似,给火灾调查和物证鉴定工作带来困难。对近年来国内外酸化汽油残留物检测相关研究内容进行综述,从酸化汽油燃烧弹结构构成、检测方法、特征成分变化及常见干扰因素分析等方面进行阐述。确定其残留物主要鉴定方法是气相色谱—质谱联用技术,鉴定目标化合物为叔丁基化合物。

Acidified gasoline is a new kind of arson fire combustion promoter that has appeared in recent years.Acidified gasoline is a mixture of concentrated sulfuric acid and gasoline,which will generate new components.Their characteristics are similar to those of ordinary gasoline,resulting in difficulties in the investigation and identification of physical evidence.This paper reviews the related researches on acidified gasoline residue detection at home and abroad in recent years,and elaborates on the structure of acidified gasoline incendiary bomb,detection methods,characteristic component changes and common interference factors analysis.To determine its residues,the main identification method of gas chromatography-mass spectrometry technology was applied in the experiment with tert-butyl compounds as the identification target compounds.This research can serve as a reference for the detection of residues of acidified gasoline used as a combustion aid in arson fires.