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- Title
Solid-phase microextraction of 2,4,6-trinitrotoluene using a molecularly imprinted-based fiber.
- Authors
Bianchi, Federica; Giannetto, Marco; Mori, G.; D'Agostino, G.; Careri, M.; Mangia, A.
- Abstract
A molecularly imprinted polymer with trinitrotoluene as the template molecule was synthesized and used as the novel coating for solid-phase microextraction of the nitroaromatic explosive 2,4,6-trinitrotoluene for its selective determination. The fiber was characterized in terms of coating thickness, morphology, intra- and inter-batch repeatability and extraction efficiency. An average thickness of 50 ± 4 μm with a uniform distribution of the coating was obtained. Good performances of the developed procedure in term of both intra-batch and inter-batch repeatability with relative standard deviations <8% were obtained. Finally, detection and quantitation limits in the low nanogram per kilogram levels were achieved proving the superior extraction capability of the developed coating, obtaining gas chromatography-mass spectrometry responses about two times higher than those achieved using commercial devices. [Figure not available: see fulltext.]
- Subjects
CHROMATOGRAPHIC analysis; IMPRINTED polymers; TNT (Chemical); DISTRIBUTION (Probability theory); GAS chromatography/Mass spectrometry (GC-MS)
- Publication
Analytical & Bioanalytical Chemistry, 2012, Vol 403, Issue 8, p2411
- ISSN
1618-2642
- Publication type
Article
- DOI
10.1007/s00216-012-5875-0