固相微萃取-气相色谱-质谱联用法鉴定火场残留物中乙醇、乙醚、丙酮等易燃液体
Identification of Inflammable Liquids (Ethanol,Ether and Acetone) in Debris of Fire Scene by Hyphenated GC-MS with SPME
摘 要
将从火场残留物中所取得的样品置于密封的金属罐或塑料袋中,置于烘箱中在80 ℃加热20~30 min,在固体微萃取装置中用聚丙烯酸酯纤维通过针头将密封容器中的易燃液体(此时已成气态)吸附,吸附时间为5~10 min,然后将易燃液体从纤维上解吸并进样于气相色谱仪器中,按预定的条件进行气相色谱-质谱分析.对色谱图上所得的主峰进行分析,并提取此纯化合物的质谱图以及相关信息,从图谱库中进行检索并与标准谱图作比较,从而对相应的易燃液体作出鉴定.
固相微萃取
易燃液体
火场残留物
鉴定
Hyphenated GC-MS
Solid phase microextraction (SPME)
Inflammable liquid
Debris of fire scene
Identification
Abstract
Sample of debris collected from fire scene was sealed in a metal vessel or plastic bag,and heated at 80 ℃ for 20-30 min.Inflammable liquid (in vapor state) in the vessel or bag was adsorbed on the PA (ester of polypropenoic acid) fibre through syringe needle of the SPME installation for 5-10 min.Inflammable liquid was desorbed and introduced into the GC instrument and determined under the prescribed conditions of GC-MS analysis.By analyzing the principal peak observed in the chromatograph,abstracting the mass spectrum of this pure compound as well as its related information,and finally retrieving and comparing with the standard reference spectra in the database,the respective inflammable liquid was identrified.
中图分类号 O657.63
所属栏目 工作简报
基金项目
收稿日期 2007/5/25
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备注邓震宇(1972-),男,湖南邵阳人,工程师,主要研究方向为火灾物证鉴定.
引用该论文: DENG Zhen-yu,TIAN Gui-hua,FAN Zi-lin. Identification of Inflammable Liquids (Ethanol,Ether and Acetone) in Debris of Fire Scene by Hyphenated GC-MS with SPME[J]. Physical Testing and Chemical Analysis part B:Chemical Analysis, 2008, 44(7): 624～626
邓震宇,田桂花,范子琳. 固相微萃取-气相色谱-质谱联用法鉴定火场残留物中乙醇、乙醚、丙酮等易燃液体[J]. 理化检验－化学分册, 2008, 44(7): 624～626
被引情况:
【1】杨爱武,刘笑临, "火工引燃药剂中硫、硝化棉、高氯酸钾分析方法改进",理化检验－化学分册 51, 1106-1109(2015)
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参考文献
【1】Furton K G,Almirall J R.Application of solid-phase microextraction to the recovery of explosives and ignitable liquid residues from forensic specimens[J].J Chromatogr,2000,885(1/2):419．
【2】Furton K G,Almirall J R,Bruna J.A simple,inexpensive,rapid,sensitive and solventless technique for the analysis of accelerants in fire debris based on SPME[J].J High Res Chromatogr,1995,18(10):625．
【3】Keto R O,Wineman P L.Detection of petroleum-based accelerants in fire debris by target compound gas chromatography/mass spectrometry[J].Anal Chem,1991,63(18):1964．
【2】Furton K G,Almirall J R,Bruna J.A simple,inexpensive,rapid,sensitive and solventless technique for the analysis of accelerants in fire debris based on SPME[J].J High Res Chromatogr,1995,18(10):625．
【3】Keto R O,Wineman P L.Detection of petroleum-based accelerants in fire debris by target compound gas chromatography/mass spectrometry[J].Anal Chem,1991,63(18):1964．
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