AI Article Synopsis
- The study discusses using activated charcoal strips (ACS) to extract and concentrate ignitable liquid residues (ILRs) from fire debris in arson investigations, focusing on gas-phase adsorption of volatiles.
- This method offers an alternative to traditional liquid extraction techniques like carbon dioxide or hexane, as it includes automated thermo-desorption (ATD) for direct analysis with gas chromatography-mass spectrometry (GC-MS).
- The workflow allows for a portion of the ACS to be used for thermal desorption while retaining some for confirmation analysis, presenting a promising technique for fire debris analysis.
Article Abstract
Adsorption of volatiles in gaseous phase to activated charcoal strip (ACS) is one possibility for the extraction and concentration of ignitable liquid residues (ILRs) from fire debris in arson investigations. Besides liquid extraction using carbon dioxide or hexane, automated thermo-desorption can be used to transfer adsorbed residues to direct analysis by gas chromatography-mass spectrometry (GC-MS). We present a fire debris analysis work-flow with headspace adsorption of volatiles onto ACS and subsequent automated thermo-desorption (ATD) GC-MS analysis. Only a small portion of the ACS is inserted in the ATD tube for thermal desorption coupled to GC-MS, allowing for subsequent confirmation analysis with another portion of the same ACS. This approach is a promising alternative to the routinely used ACS method with solvent extraction of retained volatiles, and the application to fire debris analysis is demonstrated.
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| http://dx.doi.org/10.1016/j.forsciint.2018.05.048 | DOI Listing |
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