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Coupled reversed-phase and ion chromatographic system for the simultaneous identification of inorganic and organic explosives

Citation

Tyrrell, E and Dicinoski, GW and Hilder, EF and Shellie, RA and Breadmore, MC and Pohl, CA and Haddad, PR, Coupled reversed-phase and ion chromatographic system for the simultaneous identification of inorganic and organic explosives, Journal of Chromatography A, 1218, (20) pp. 3007-3012. ISSN 0021-9673 (2011) [Refereed Article]


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DOI: doi:10.1016/j.chroma.2011.03.046

Abstract

There are many methods available to detect and positively identify either organic or inorganic explosives separately, however no one method has been developed which can detect both types of explosive species simultaneously from a single sample. In this work, a unique coupled-chromatographic system is reported for the simultaneous determination of both organic and inorganic explosive species and is used for pre-blast analysis/identification purposes. This novel approach is based on the combination of reversed-phase high performance liquid chromatography and ion chromatography which allows trace levels of organic and inorganic explosives to be determined simultaneously from a single sample. Using this procedure, a 20 min reversed-phase separation of organic explosives is coupled to a 16 min ion-exchange separation of anions present in inorganic explosives, providing a complete pre-blast analysis/identification system for the separation and detection of a complex mixture containing organic and/or inorganic explosive species. The total analysis time, including sufficient column re-equilibration between runs, was <25 min using the coupled system. By this method, the minimum resolution for the organic separation was 1.16 between nitroglycerin and tetryl and the detection limits ranged from 0.31 mg L(-1) for cyclotetramethylene tetranitramine (HMX) and 1.54 mg L(-1) for pentaerythrite tetranitrate (PETN), while the minimum resolution for the inorganic separation was 0.99 between azide and nitrate, and the detection limits ranged from 7.70 mu g L(-1) for fluoride and 159.50 mu g L(-1) for benzoate. Crown Copyright (C) 2011 Published by Elsevier B.V. All rights reserved.

Item Details

Item Type:Refereed Article
Research Division:Chemical Sciences
Research Group:Analytical Chemistry
Research Field:Separation Science
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Chemical Sciences
Author:Tyrrell, E (Dr Eadaoin Tyrrell)
Author:Dicinoski, GW (Associate Professor Gregory Dicinoski)
Author:Hilder, EF (Professor Emily Hilder)
Author:Shellie, RA (Associate Professor Robert Shellie)
Author:Breadmore, MC (Professor Michael Breadmore)
Author:Haddad, PR (Professor Paul Haddad)
ID Code:72224
Year Published:2011
Funding Support:Australian Research Council (LP0669302)
Web of Science® Times Cited:20
Deposited By:Chemistry
Deposited On:2011-08-24
Last Modified:2012-05-10
Downloads:0

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