Headspace sorptive extraction for the detection of combustion accelerants in fire debris

被引：23

作者：

Cacho, J. I. ^{[1
]}

Campillo, N. ^{[1
]}

Aliste, M. ^{[1
]}

Vinas, P. ^{[1
]}

Hernandez-Cordoba, M. ^{[1
]}

机构：

[1] Univ Murcia, Fac Chem, Dept Analyt Chem, E-30100 Murcia, Spain

来源：

FORENSIC SCIENCE INTERNATIONAL | 2014年 / 238卷

关键词：

Fire debris; Combustion accelerants; Ignitable liquid residues; Headspace sorptive extraction (HSSE); Gas chromatography-mass spectrometry (GC-MS); IGNITABLE LIQUIDS; GAS-CHROMATOGRAPHY; FORENSIC PURPOSES; GC-MS; SPECTROMETRY; GASOLINE; SAMPLES; SPME;

D O I：

10.1016/j.forsciint.2014.02.006

中图分类号：

DF [法律]; D9 [法律]; R [医药、卫生];

学科分类号：

0301 ; 10 ;

摘要：

A novel method for separation and identification of ignitable liquid residues in fire debris by gas chromatography and mass spectrometry is presented. Preconcentration of the analytes was carried out using the simple headspace sorptive extraction (HSSE) technique. Polydimethylsiloxane stir bars were used as the enrichment phase, and parameters affecting both the adsorption and desorption stages were carefully optimized. Extraction was carried out at 50 degrees C for 1 h. Stir bars were desorbed thermally in the GC injection port, thus avoiding the use of organic solvents. The results for five ignitable liquids, including gasoline and diesel fuel, using HSSE were compared with those obtained with a solid-phase microextraction method, with HSSE appearing as a more sensitive alternative. (C) 2014 Elsevier Ireland Ltd. All rights reserved.

引用

页码：26 / 32

页数：7

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