title: Temperature-tunable selectivity in comprehensive two-dimensional gas chromatography.
abstract: A temperature-tunable two-dimensional gas chromatography setup, consisting of three capillary columns with different selectivity, is described. In this setup the selectivity of the primary dimension can be tuned by adjusting the temperature offset of two in series-coupled capillary columns, both columns being part of the primary dimension and positioned in two separate GC ovens. The overall GC×GC separation can be optimized by altering the selectivity of the primary dimension. Besides tuning selectivity, in order to achieve optimal separation, this 2D-GC setup also offers enhanced opportunities for qualitative analysis. Sequentially altering the selectivity of the primary dimension enables one to identify groups of compounds which show similar chromatographic retention behavior.
authors.affiliation: DSM Resolve, P.O. Box 18, 6160 MD Geleen, The Netherlands. john.mommers@dsm.com
authors.forename: John
authors.initials: J
authors.lastname: Mommers
authors.forename: Jeroen
authors.initials: J
authors.lastname: Knooren
authors.forename: Thomas
authors.initials: T
authors.lastname: Dutriez
authors.forename: Erik
authors.initials: E
authors.lastname: Ritzen
authors.forename: Sjoerd
authors.initials: S
authors.lastname: van der Wal
mesh_terms: D002849:Chromatography, Gas / Q000295:instrumentation* / Q000379:methods*; D008956:Models, Chemical; D009930:Organic Chemicals / Q000032:analysis / Q000737:chemistry; D013696:Temperature
chemical_list: D009930:Organic Chemicals