火场中烟煤对汽油检测的影响研究  

Study on the influence of bituminous coal on gasoline identification

作　　者：刘玲[1] 陈路 方强 LIU Ling;CHEN Lu;FANG Qiang(The Chinese People's Armed Police Forces Academy,He.bei Langfang 065000,China;Yibin Fire Detachment,Sichuan Yibin,644000,China)

机构地区：[1]中国人民武装警察部队学院,河北廊坊065000 [2]宜宾市消防支队,四川宜宾644000

出　　处：《消防科学与技术》2018年第10期1324-1326,共3页Fire Science and Technology

摘　　要：基于气相色谱-质谱法(GC-MS),模拟火场条件,研究了烟煤原样及烟煤燃烧残留物的谱图特征,与火灾物证鉴定国家标准中汽油的特征谱图及确认标准进行了比对。实验结果表明,烟煤中可检出烷烃、芳香烃及稠环芳烃类物质,与汽油的特征组分相似,但是烟煤的组成成分更加复杂,可检出卤代烃、醇、酯、醚、醛等汽油中没有的物质,保留时间跨度更大,可以在鉴定中加以区分;烟煤燃烧残留物中仍能检出与汽油相似的特征组分,但是随着燃烧时间的增加,特征组分的种类和数量会明显减少,其中芳香烃类物质保留较好。研究结果可以为火灾物证鉴定和火灾调查工作提供参考。Based on gas chromatography-mass spectrometry(GCMS),and simulating the fire scene condition,the spectral charac.teristics of bituminous coal and its combustion residues were stud.ied,and were compared with the national standard for identifica.tion of fire evidence.The experimental results showed that,al.kanes,aromatic hydrocarbons and polycyclic aromatic hydrocar.bons could be detected in bituminous coal,which was similar to that of gasoline.However,compared with gasoline,the composi.tion of bituminous coal was more complicated,and halogenated hy.drocarbons,alcohols,esters,ethers,and aldehydes substances can be found in bituminous coal.The retention time of coal is wider than gasoline,which can be distinguished in the identification.The characteristic components can still be detected in bituminous coal combustion residues,but with the increase of combustion time,the types and quantities of the characteristic components will obvious.ly decrease,among which aromatic hydrocarbons are better re.tained.The results can provide references for fire evidence identifi.cation and fire investigation.

关 键 词：物证鉴定 GC-MS 汽油 烟煤 火灾调查 

分 类 号：X928.7[环境科学与工程—安全科学] TU998.12[建筑科学—市政工程]