Reference : A flexible loop-type flow modulator for comprehensive two-dimensional gas chromatography
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Chemistry
http://hdl.handle.net/2268/231071
A flexible loop-type flow modulator for comprehensive two-dimensional gas chromatography
English
Tranchida, P. Q. [Dipartimento Farmaco-chimico, Facoltà di Farmacia, Università degli Studi di Messina, viale Annunziata, 98168 Messina, Italy]
Purcaro, Giorgia mailto [Université de Liège - ULiège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Chimie des agro-biosystèmes >]
Visco, A. [Dipartimento Farmaco-chimico, Facoltà di Farmacia, Università degli Studi di Messina, viale Annunziata, 98168 Messina, Italy, Shimadzu Italia, Via G.B. Cassinis, 7, 20139 Milano, Italy]
Conte, L. [Università Campus-Biomedico, Via Alvaro del Portillo, 21, 00128 Roma, Italy]
Dugo, P. [Dipartimento Farmaco-chimico, Facoltà di Farmacia, Università degli Studi di Messina, viale Annunziata, 98168 Messina, Italy, Università Campus-Biomedico, Via Alvaro del Portillo, 21, 00128 Roma, Italy]
Dawes, P. [SGE Analytical Science, 7 Argent Place, Ringwood, 3134 VIC, Australia]
Mondello, L. [Dipartimento Farmaco-chimico, Facoltà di Farmacia, Università degli Studi di Messina, viale Annunziata, 98168 Messina, Italy, Università Campus-Biomedico, Via Alvaro del Portillo, 21, 00128 Roma, Italy]
2011
Journal of Chromatography A
1218
21
3140-3145
Yes (verified by ORBi)
International
00219673
[en] Comprehensive two-dimensional gas chromatography ; Flow modulation ; Flow splitting ; Food analysis ; GC×GC ; Enantio ; Flame ionization detectors ; Flow modulations ; High temperature ; Inner surfaces ; Polar columns ; Pressure source ; Seven-port ; Essential oils ; Ionization of gases ; Modulation ; Smoke detectors ; Two dimensional ; Gas chromatography ; Mentha spicata ; Chromatography, Gas ; Equipment Design ; Gasoline ; Hydrocarbons ; Mentha spicata ; Models, Chemical ; Oils, Volatile ; Reproducibility of Results ; Mentha spicata
[en] The present investigation is focused on a simple flow modulator (FM), for comprehensive two-dimensional gas chromatography (GC × GC). The interface is stable at high temperatures, and consists of a metallic disc (located inside the GC oven) with seven ports, which are connected to an auxiliary pressure source via two branches, to the first and second dimension, to a waste branch (linked to a needle valve) and to an exchangeable modulation loop (2 ports). The ports are connected via micro-channels, etched on one of the inner surfaces of the disc. Modulation is achieved using a two-way electrovalve, connected on one side to the additional pressure source, and to the two metal branches, on the other. An FM enantio-GC × polar-GC method (using a flame ionization detector) was optimized (a 40-μL loop was employed), for the analysis of essential oils. As an example, an application on spearmint oil is shown; the method herein proposed was subjected to validation. Finally, an FM GC × GC diesel experiment was carried out, using an apolar-polar column combination, to demonstrate the effectiveness of the modulator in the analysis of a totally different sample-type. © 2010 Elsevier B.V.
Researchers
http://hdl.handle.net/2268/231071
10.1016/j.chroma.2010.11.082

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