title: Analysis of aromatic compounds in gasoline with flow-switching comprehensive two-dimensional gas chromatography.
abstract: A comprehensive two-dimensional gas chromatography (GC x GC) instrument has been created by coupling a flow-switching modulator and a standard gas chromatograph. The instrument was used to characterize the aromatic composition of gasoline. The high-resolution separation produced by flow-switching GC x GC allowed gasoline aromatics to be fully resolved from saturated components. The aromatic compounds were further separated into groups having the same carbon number. A standard gasoline sample was analyzed to evaluate the quantitative accuracy and precision of this technique. The data show that flow-switching GC x GC produces results that are comparable to gas chromatography-mass spectrometry (GC-MS) and thermal modulation GC x GC. The simple, low-cost, and robust nature of flow-switching GC x GC makes it an ideal technique for the routine analysis of aromatic compounds in gasoline.
authors.affiliation: Oakland University, Department of Chemistry, Rochester, MI 48309, USA.
authors.forename: Nicole J
authors.initials: NJ
authors.lastname: Micyus
authors.forename: James D
authors.initials: JD
authors.lastname: McCurry
authors.forename: John V
authors.initials: JV
authors.lastname: Seeley
mesh_terms: D002849:Chromatography, Gas / Q000379:methods*; D008401:Gas Chromatography-Mass Spectrometry; D005742:Gasoline / Q000032:analysis*
chemical_list: D005742:Gasoline