Multidimensional High-Resolution Gas Chromatographic Investigations of Hydrocarbon Fuels and Various Turbine Engine Fuel Precursors.
Final rept. Apr-Sep 84,
DAYTON UNIV OH RESEARCH INST
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The instrumental chemical analysis of complex organic mixtures requires efficient chromatographic techniques for the separation and analysis of the mixture constituents. Highly complicated mixtures, such as petroleum crudes, turbine engine fuels, shale oil, composited industrial organic liquid wastes, etc., require the use of high-resolution gas chromatographic HRGC techniques. The recent introduction of multidimensional gas chromatographic MDGC procedures shows promise of advancing HRGC techniques even further. The literature pertaining to multicolumn and multidimensional procedures was surveyed, and an MDGC system was assembled which used a previously optimized open tubular column gas chromatographic system. Special features were incorporated into this MDGC system which contained a two-column arrangement within a single temperature programmable chamber. The performance of the assembled MDGC system was evaluated and it was determined that for maximum performance of the assembled MDGC system was evaluated and it was determined that for maximum performance to be obtained from such coupled-column assemblies, considerable attention must be given to the design and behavior of each of the many different components within the entire chromatrographic flow path. It was concluded that MDGC represents a valuable additional approach for obtaining high-quality analyses of complex organic mixtures. Keywords Multidimensional gas chromatography Valveless switching Negative thermal gradient device Pyrolysis oil.
- Physical Chemistry