Trace detection of explosives with a unique large volume injection gas chromatography-mass spectrometry (LVI-GC-MS) method

Abstract

Highly sensitive splitless programmed temperature vaporizing (PTV)-large volume injection (LVI)-GC-MS-negative chemical ionization (NCI) method was developed and validated for the trace detection of explosives and related compounds from environmental matrices.

A Toolbox for the Determination of Nitroaromatic Explosives in Marine Water, Sediment, and Biota Samples on Femtogram Levels by GC-MS/MS

“…According to Emmrich et al 2001 [ 21 ], the use of packed CarboFrit liner instead of quartz wool is highly recommended. The same packing material was used by Marder et al (2018) [ 22 ]. Initial experiments with an injector temperature of 290 °C almost resulted in a complete loss of the TNT peak from the second injection onwards, so temperatures between 180 and 280 °C were tested.…”

Interpol review of detection and characterization of explosives and explosives residues 2016-2019

“…Marder, D., Tzanani, N., Prihed, H. and Gura, S. used a splitless programmed temperature vaporizing (PTV)-large volume injection (LVI)-GC-MS-negative chemical ionization (NCI). They improve traditional LVI and the issue of having trouble detecting too many analytes in one sample by having “a unique double-column configuration setup developed for the efficient removal of excess solvent through a flame detector before reaching the MS, with the precise timing of carrier-gas flows and the heating program” [ 274 ].…”

Quantum of selectivity testing: detection of isomers and close homologs using an AZO based e-nose without a prior training

“…Information transmitted with gaseous species, smells, comprises a valuable source in many practical applications, such as air pollution monitoring, 1,2 methanol detection in beverages, 3 human health assessment, 4 detection of viruses 5 or explosives. 6 It was evolutionarily required for human survival, stimulating fast avoidance response to traces of dangerous smells. 7 Obvious demands for easy detection of these smells have led to the appearance of a large family of sensors and gas analytical systems.…”