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Comprehensive Two-Dimensional Gas Chromatography for Detailed Characterisation of Petroleum Products

Abstract : Comprehensive two-dimensional gas chromatography (GCxGC) is a major advance for the detailed characterisation of petroleum products. This technique is based on two orthogonal dimensions of separation achieved by two chromatographic capillary columns of different chemistries and selectivities. High-frequency sampling between the two columns is achieved by a modulator, ensuring that the whole sample is transferred and analysed continuously in both separations. Thus, the peak capacity and the resoluting power dramatically increase. Besides, highly structured 2D chromatograms are obtained upon the volatility and the polarity of the solute to provide more accurate molecular identification of hydrocarbons. In this paper fundamental and practical considerations for implementation of GCxGC are reviewed. Selected applications obtained using a prototype of a GCxGC chromatograph developed in-house highlight the potential of the technique for molecular characterisation of middle distillates, sulphur speciation in diesel and analysis of effluents from petrochemical processes.
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https://hal.archives-ouvertes.fr/hal-00617264
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Colombe Vendeuvre, R. Ruiz-Guerrero, Fabrice Bertoncini, Laurent Duval, Didier Thiébaut. Comprehensive Two-Dimensional Gas Chromatography for Detailed Characterisation of Petroleum Products. Oil & Gas Science and Technology - Revue d'IFP Energies nouvelles, Institut Français du Pétrole, 2007, 62 (1), pp.43-55. ⟨10.2516/ogst:2007004⟩. ⟨hal-00617264⟩

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