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Reference type: Journal
Authors: Lordel S, Chapuis-Hugon F, Eudes V, Pichon V
Article Title: Development of imprinted materials for the selective extraction of nitroaromatic explosives.
Publication date: 2010
Journal: Journal of Chromatography A
Volume: 1217
Issue: (43)
Page numbers: 6674-6680.
DOI: 10.1016/j.chroma.2010.04.081
Alternative URL: http://www.sciencedirect.com/science/article/B6TG8-5023KKV-1/2/b5ecb2c14f71df7167f7bd21b6c401d3

Abstract: Molecularly imprinted sorbents were synthesized and used as selective extraction sorbents for the analysis of nitroaromatic explosives. Their synthesis by radical polymerization using organic monomers and by sol-gel approach using organosilanes was considered to develop a selective sorbent. The sol-gel approach with phenyltrimethoxysilane (PTMS) as monomer and 2,4-dinitrotoluene (2,4-DNT) as template gave the most promising results. An optimized procedure adapted to the selective treatment of aqueous samples was then developed and applied to various target explosives. For the first time four nitroaromatic compounds were retained on the molecularly imprinted silica (MIS) with extraction recoveries between 29% and 81%, while only low recoveries were obtained on the non-imprinted sorbent, thus highlighting the high degree of selectivity. The MIS was then used for the clean-up of a sample containing motor oil spiked with 2,4-DNT and 2,4,6-trinitrotoluene (2,4,6-TNT). The results were compared with those obtained using a conventional sorbent (Oasis HLB). The cleanest chromatogram obtained using the MIS emphasized the high potential of the MIS as selective sorbent
Template and target information: 2,4-dinitrotoluene, 2,4-DNT, 2,4,6-trinitrotoluene, 2,4,6-TNT, TNT
Author keywords: Nitroaromatic explosives, molecularly imprinted polymer, Molecularly imprinted silica, sol-gel, Solid-phase extraction

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