Accelerant Detection in Fire Residues

Stone, Irving C.; Lomonte, J. N.; Fletcher, L. A.; Lowry, W. T.

doi:10.1520/jfs10655j

“…Since the early 1960s, gas chromatography has been extensively used in arson analysis [1][2][3][4]. There are only scattered reports in the literature which employed retention indices comparison to match peaks in two chromatograms [5,6].…”

Section: Introductionmentioning

confidence: 99%

Adsorption/desorption GC assisted with retention index comparison of peaks for the identification of accelerants in fire residues

Chang

¹

,

Giang

²

,

Wang³

et al. 1993

Proceedings of IEEE International Carnahan Conference on Security Technology CCST-94

1

0

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A b s t r a c tThis paper presents both an efficient sample preparation procedure and a highly discriminating gas chromatographic method for the identification of accelerants in fire residues. A purge-and-trap concentrator fitted with a carbotrap adsorbent tube was used to preconcentrate the accelerants from various fire residues. The resultant sample tubes were submitted to a thermal desorption unit (TDU) which was connected to a dual wide-bore capillary column GC. The identification of the accelerants was based on both retention indices comparison and chromatogram pattern recognition. The advantages and disadvantages of this dynamic adsorption/desorption procedure were discussed by comparison with other pretreatment procedures such as charcoal tube adsorption/CS, extraction and continuous steam distillation.

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Forensic Chemistry

Fisher¹

2000

Kirk-Othmer Encyclopedia of Chemical Technology

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Forensic chemistry, the application of chemistry to the law, is used to assist courts in the interpretation of the relevancy of scientific findings obtained from the examination of physical evidence, most of which is organic in nature. Chemical forensic testing, which may involve forensic toxicology, identification of solid drug samples, or trace analysis by means of modern instrumental analysis techniques, is described. In forensic toxicology, samples from a biological source are screened to confirm the presence of alcohol or drugs. Immunoassays combined with chromatographic techniques are most often employed. Solid‐dose drug samples are first subjected to the older spot and microcrystalline tests. Common drugs of abuse are discussed. Trace evidence, a generic term for microscopic physical evidence, may be examined by various microscopic techniques. Photography and high intensity light sources are also important analytic tools. Forensic serology, the characterization of blood and other biological materials, is also presented. Species origin and blood and DNA typing are discussed.

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Forensic Chemistry

Rowe¹

2004

Kirk-Othmer Encyclopedia of Chemical Technology

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Forensic chemistry, the application of chemistry to the law, is used to assist courts in the interpretation of the relevancy of scientific findings obtained from the examination of physical evidence, most of which is organic in nature. Chemical forensic testing, which may involve forensic toxicology, identification of solid drug samples, or trace analysis by means of modern instrumental analysis techniques, is described. In forensic toxicology, samples from a biological source are screened to confirm the presence of alcohol or drugs. Immunoassays combined with chromatographic techniques are most often employed. Solid‐dose drug samples are first subjected to the older spot and microcrystalline tests. Common drugs of abuse are discussed. Trace evidence, a generic term for microscopic physical evidence, may be examined by various microscopic techniques. Photography and high intensity light sources are also important analytic tools. Forensic serology, the characterization of blood and other biological materials, is also presented. Species origin and blood and DNA typing are discussed.

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Accelerant Detection in Fire Residues

Cited by 15 publications

References 3 publications

Adsorption/desorption GC assisted with retention index comparison of peaks for the identification of accelerants in fire residues

Adsorption/desorption GC assisted with retention index comparison of peaks for the identification of accelerants in fire residues

Forensic Chemistry

Forensic Chemistry

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