Quantitative Comparison of Trace Organonitrate Explosives Detection by GC-MS and GC-ECD2 Methods with Emphasis on Sensitivity

Quantitative analysis of organonitrate explosive standards was performed by gas chromatography (GC) with dual electron capture detection (ECD2) and electron-impact ionization quadrupole mass spectrometry (EI-MS) in selected ion monitoring (SIM) detection mode. A comparison of method conditions and p...

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Bibliographic Details
Published in:Journal of chromatographic science 2011-01, Vol.49 (1), p.1-7
Main Authors: Gregory, Kerin E., Kunz, Roderick R., Hardy, Dennis E., Fountain, Augustus Way, Ostazeski, Stanley A.
Format: Article
Language:English
Subjects:
Analytical chemistry
Applied sciences
Chemical industry and chemicals
Chemistry
Chromatographic methods and physical methods associated with chromatography
Exact sciences and technology
Gas chromatographic methods
Industrial chemicals
Powders, propellants, explosives
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Summary:Quantitative analysis of organonitrate explosive standards was performed by gas chromatography (GC) with dual electron capture detection (ECD2) and electron-impact ionization quadrupole mass spectrometry (EI-MS) in selected ion monitoring (SIM) detection mode. A comparison of method conditions and performance parameters, including minimum detectable limit (MDL) by compound, is presented in this technical note. The GC-ECD2 method shows an improved 30-250X sensitivity to dinitroaromatics, trinitroaromatics and RDX, in clean noise-limited backgrounds, and the GC-MS method reveals a sensitivity increase of 2-1 0X to high volatility mononitroaromatics, the ability to detect target analytes in complex matrices, and identify unknown compounds by mass-to-charge determination.
ISSN:0021-9665
1945-239X
DOI:10.1093/chrsci/49.1.1