应用SPME-GC/MS/PFPD技术测定烃类及硫化物标记物鉴别汽油、煤油、柴油燃烧残留物

The determination of hydrocarbon,aromatic,sulfur compounds in residues of gasoline,kerosene,diesel-fuel by SPME-GC/MS/PFPD

目的利用汽油、煤油、柴油等助燃剂中特殊的硫化合物类标记物,建立一种新型的火场助燃剂残留物分析方法。方法应用固相微萃取-气质联用-脉冲火焰光度检测器(SPME-GC/MS/PFPD)技术同步测定烃类、芳香烃类及硫化合物类。结果确定了13种特征硫化合物。质谱烃类数据和PFPD硫化合物数据稳定,RSD%值分别≤0.75和≤1.29。结论该方法能对各种纵火现场助燃剂微量燃烧残留物进行有效鉴别。

The method for separation and simultaneous determination of hydrocarbon, aromatic and sulfur compounds in residue of gasoline, kerosene, diesel fuel from fire debris by SPME GC/MS/PFPD was established. Based on detection of sulfur compounds, the interference of hydrocarbon, aromatic compounds from decomposition products of polymers in fire scene have been solved.