SCMB Chemistry and Chemical Biology seminar: Multidimensional Separations in GC: Algae-Derived Bio-fuels, Advanced Olfactometry, Hybrid GCGC-MDGC Studies, and prep-GC with NMR
- Full Description:
- The next SCMB Chemistry and Chemical Biology seminar will be this Monday, 4th of March,
Prof. Philip J. Marriott (Monash University)
1.00 pm, Monday 4th of March
AIBN Seminar Room
with a seminar entitled:
Multidimensional Separations in GC: Algae-Derived Bio-fuels, Advanced Olfactometry, Hybrid GCGC-MDGC Studies, and prep-GC with NMR
Abstract: In 2012, we introduced a number of novel approaches to speciation of volatile compounds. Many of these incorporate aspects of both comprehensive two-dimensional gas chromatography (GCGC) and multidimensional GC (MDGC). Often we profile the total composition of a sample using GCGC, then study specific analytes or target regions using MDGC. This presentation will report four case studies of the above research.
1. Measurement of thermally-stressed oxygenated degradation products in algal-derived jet fuel. Oxygenated products can form gums and block jet engine nozzles. They must be measured at low level (< 0.1%), but fuel matrix confounds the analysis. We use GC×GC-FID and MDGC-MS to resolve this problem.
2. Precise olfactometry assessment for overall perception of aroma compounds in wine samples. Olfactometry requires good aroma resolution. We developed a system allowing 1D GC-‘O’, 1D GC-FID, GCGC-FID, and MDGC-qMS/’O’ in a single instrument.
3. Hybrid GCGC-MDGC methodology. This powerful approach can perform on-line extraction of single compounds or compounds classes during GC separation to provide ultrahigh resolution.
4. Prep MDGC. High resolution GC separation with single compound isolation, and NMR and X-ray crystallography structure determination.
Directions to UQ
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