Multidimensional gas chromatographic

Mondello et al. (2, 20-23) have used a multidimensional gas chromatographic system based on the use of mechanical valves which were stable at high temperatures developed in their laboratory for the determination of the enantiomeric distribution of monoterpene hydrocarbons (/3-pinene, sabinene and limonene) and monoterpene alcohols (linalol, terpinen-4-ol and a-terpineol) of citrus oils (lemon, mandarin, lime and bergamot). Linalyl acetate was also studied in bergamot oil. The system consisted of two Shimadzu Model 17 gas chromatographs, a six-port two-position valve and a hot transfer line. The system made it possible to carry out fully... 

Gomera, B., Gonzalez, M.J. (2003). Enantiomeric separation of chiral PCBs in eggs of predatory birds from Donana National Park (Spain) by using multidimensional gas chromatographic techniques. Organohalogen Compounds 62, 273-276. 

Multidimensional gas chromatograph with two linked independently operated ovens (first oven fitted with an on-column injector and both ovens fitted with FIDs)... 

Multidimensional gas chromatograph with two linked independently operated ovens. The first oven is fitted with an on-column injector, both ovens are fitted with FIDs and the second oven has an olfactometer installed in parallel with the FID. The analytical column is installed in either the FID port or the olfactometer port as described (see Basic Protocol 2). 

H. Tani and M. Furuno, Rapid analysis of hydrocarbons and inert gases by a multidimensional gas chromatograph , J. High Resolut. Chromatogr. Chromatogr. Commun. 9 712-716(1985). 

E. Benicka, R. Novakovsky, J. Hrouzek, J. Krupcik, P. Sandra and J. de Zeeuw, Multidimensional gas chromatographic separation of selected PCB atropisomers in technical formulations and sediments , J. High Resolut. Chromatogr. 19 95-98 (1996). 

Koske, G. Leupold, G. Angerhofer, D. Parlar, H., Multidimensional gas chromatographic enantiomer identification of some chlorinated xenobiotics in cod liver and fish oils Chemo-sphere 1999, 39, 683-688. 

Mondello, L., A. Casilli, P.Q. Tranchida, M. Furukawa, K. Komori, K. Miseri, P. Dugo, and G. Dugo, 2006. Fast enantiomeric analysis of a complex essential oil with an innovative multidimensional gas chromatographic system.1105 11-16. 

The separation of the isomers of some environmental pollutants (chlor-danes, toxaphenes etc.) is a challenging job, while the chiral resolution of these pollutants is extremely difficult. A multidimensional gas chromatographic (MDcGC) approach for such types of chiral resolution of environmental pollutants has been proposed as the best choice. The MDcGC technique involves the use of two chiral columns of different polarities in series, each with a separate temperature control. The remarkable advantage of this technique, in both a qualitative and a quantitative sense, is a consequence of the fact that a valveless pneumatic system, which involves a live T-piece, allows a preselected small fraction to be cut from the eluate of the first column and transferred quantitatively and reproducibly to the second column. This technique may be used for the complete separation of chiral pollutants, with increased sensitivity and selectivity. Examples of this technique for the chiral resolution of environmental pollutants can be found in several publications [93-96, 122, 123]. 

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