An investigation into artefacts formed during gas chromatography/mass spectrometry analysis of firearms propellant that contains diphenylamine as the stabiliser

Paul Pigou; Genevieve Dennison; Martin Johnston; Hilton Kobus

doi:10.1016/j.forsciint.2017.08.013

An investigation into artefacts formed during gas chromatography/mass spectrometry analysis of firearms propellant that contains diphenylamine as the stabiliser

Paul Pigou, Genevieve Dennison, Martin Johnston, Hilton Kobus

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

In the course of providing assistance to legal counsel in a matter that involved the analysis of firearms propellant by gas chromatography/mass spectrometry it was noticed that phenoxazine was reported as a component of 0.22 calibre propellant that contained diphenylamine as the stabiliser. The research was conducted to find how phenoxazine was formed. The results showed that the compound was not phenoxazine but a diphenylamine derivative 4-(phenylimino) cyclohexa-2,5-dien-1-one that formed in the injection port of the gas chromatograph. In addition a second artefact was found to form in the ion source of the mass spectrometer. While the presence of the artefacts does not affect the ability to identify particles as propellant they may impact on comparison with source ammunition.

Original language	English
Pages (from-to)	140-147
Number of pages	8
Journal	Forensic Science International
Volume	279
DOIs	https://doi.org/10.1016/j.forsciint.2017.08.013
Publication status	Published - Oct 2017

Keywords

Firearms propellant analysis
Forensic chemistry
Gunshot residue

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10.1016/j.forsciint.2017.08.013

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title = "An investigation into artefacts formed during gas chromatography/mass spectrometry analysis of firearms propellant that contains diphenylamine as the stabiliser",

abstract = "In the course of providing assistance to legal counsel in a matter that involved the analysis of firearms propellant by gas chromatography/mass spectrometry it was noticed that phenoxazine was reported as a component of 0.22 calibre propellant that contained diphenylamine as the stabiliser. The research was conducted to find how phenoxazine was formed. The results showed that the compound was not phenoxazine but a diphenylamine derivative 4-(phenylimino) cyclohexa-2,5-dien-1-one that formed in the injection port of the gas chromatograph. In addition a second artefact was found to form in the ion source of the mass spectrometer. While the presence of the artefacts does not affect the ability to identify particles as propellant they may impact on comparison with source ammunition.",

keywords = "Firearms propellant analysis, Forensic chemistry, Gunshot residue",

author = "Paul Pigou and Genevieve Dennison and Martin Johnston and Hilton Kobus",

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AU - Dennison, Genevieve

AU - Johnston, Martin

AU - Kobus, Hilton

PY - 2017/10

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AB - In the course of providing assistance to legal counsel in a matter that involved the analysis of firearms propellant by gas chromatography/mass spectrometry it was noticed that phenoxazine was reported as a component of 0.22 calibre propellant that contained diphenylamine as the stabiliser. The research was conducted to find how phenoxazine was formed. The results showed that the compound was not phenoxazine but a diphenylamine derivative 4-(phenylimino) cyclohexa-2,5-dien-1-one that formed in the injection port of the gas chromatograph. In addition a second artefact was found to form in the ion source of the mass spectrometer. While the presence of the artefacts does not affect the ability to identify particles as propellant they may impact on comparison with source ammunition.

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KW - Gunshot residue

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EP - 147

JO - Forensic Science International

JF - Forensic Science International

ER -

An investigation into artefacts formed during gas chromatography/mass spectrometry analysis of firearms propellant that contains diphenylamine as the stabiliser

Abstract

Keywords

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