易燃液体在不同环境下成分变化特征的研究

为判定火灾现场中是否存在液体助燃剂,选择汽油、柴油以及油漆稀释剂等液体助燃物,总结在火灾物证鉴定过程中寻找各助燃剂目标化合物的特征规律。将液体助燃物在一定环境下分别放置不同的时间,使用GC/MS分析检测各助燃剂成分变化。各类易燃液体在经过放置和温度的作用后,低沸点的物质流失,高沸点的物质显露出来,谱图发生明显变化。鉴定过程中要根据样品的提取时间及受温情况等与不同的谱图进行对比,做出准确判断。

The component change of combustible liquid in different circumstance

The characteristic's rule of target compound in physical evidence assay of fire was summarized with the examples of gasoline,diesel and paint thinner to determine whether the scene of fire has liquid combustion improver.The component change of combustion improver was detected by GC/MS after placed for different time in certain circumstance.The low-boiling matter lost and the high-boiling matter left after placed at certain temperature and the spectrogram varied obviously.The spectrogram from fire identifica...