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Abstract
A direct, sensitive and rapid method for the detection of smokeless powder components, from five different types of ammunition, is demonstrated using laser electrospray mass spectrometry (LEMS). Common components found in powder, such as ethyl centralite, methyl centralite, dibutyl phthalate and dimethyl phthalate, are detected under atmospheric conditions without additional sample preparation. LEMS analysis of the powders revealed several new mass spectral features that have not been identified previously. Offline principal component analysis and discrimination of the LEMS mass spectral measurements resulted in perfect classification of the smokeless powder with respect to manufacturer.
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Concepts
Electrospray ionization, Mass spectrometry, Principal component analysis, The Unscrambler, Plasticizers, Smokeless powder, Multivariate statistics, Centralite
MeSH headings
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