Detection and Characterization of Ignitable Liquid Residues in Forensic Fire Debris Samples by Comprehensive Two-Dimensional Gas Chromatography
| Autor: | Marjan Sjerps, Peter J. Schoenmakers, A.C. van Asten, Gabriel Vivó-Truyols, G. van der Weg, B. van Daelen, Martin Lopatka, Andjoe A.S. Sampat, Hans G.J. Mol |
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| Přispěvatelé: | Supramolecular Separations (HIMS, FNWI), Faculty of Science, Stochastics (KDV, FNWI), KdV Other Research (FNWI) |
| Rok vydání: | 2018 |
| Předmět: |
forensic fire investigation
BU Contaminanten & Toxines Filtration and Separation Ignitable liquids Gc gc tofms Mass spectrometry 01 natural sciences Arson Analytical Chemistry lcsh:Chemistry BU Contaminants & Toxins 03 medical and health sciences 0302 clinical medicine GC×GC Fire debris analysis Forensic fire investigation 030216 legal & forensic medicine Gasoline Simulated fire debris samples arson Chromatography 010401 analytical chemistry ignitable liquids GC×GC-TOFMS Debris lcsh:QC1-999 0104 chemical sciences Characterization (materials science) fire debris analysis lcsh:QD1-999 Two-dimensional gas Environmental science medium petroleum distillate Gas chromatography simulated fire debris samples Comprehensive two-dimensional gas chromatography lcsh:Physics Medium petroleum distillate |
| Zdroj: | Separations, Vol 5, Iss 3, p 43 (2018) Separations, 5(3):43. Multidisciplinary Digital Publishing Institute Separations, 5(3) Separations 5 (2018) 3 Separations Volume 5 Issue 3 |
| ISSN: | 2297-8739 |
| DOI: | 10.3390/separations5030043 |
| Popis: | This study covers an extensive experimental design that was developed for creating simulated fire debris samples under controlled conditions for the detection and identification of ignitable liquids (IL) residues. This design included 19 different substrates, 45 substrate combinations with and without ignitable liquids, and 45 different ILs from three classes (i.e., white spirit, gasoline, and lamp oil). Chemical analysis was performed with comprehensive two-dimensional gas chromatography coupled to time-of-flight mass spectrometry (GC× GC-TOFMS) for improved separation and compound identification. The enhanced peak capacity offered by GC× GC-TOFMS allowed the use of a target compound list in combination with a simple binary decision model to arrive at quite acceptable results with respect to IL detection (89% true positive and 7% false positive rate) and classification (100% correct white spirit, 79% correct gasoline, and 77% correct lamp oil assignment). Although these results were obtained in a limited set of laboratory controlled fire experiments including only three IL classes, this study confirms the conclusions of other studies that GC× GC-TOFMS can be a powerful tool in the challenging task of forensic fire debris analysis. |
| Databáze: | OpenAIRE |
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