Presentation Profile
Group-Type Analysis of Petroleum Products by GC × GC using Complementary GC Column selectivity
Currently Scheduled: 10/15/2019 - 11:10 AM - 11:30 AM
Room: South Lobby
Main Author
Ramkumar Dhandapani - Phenomenex
- Timothy Nelson - Phenomenex
- Laura McGregor - SepSolve Analytical
- Matthew Edwards - SepSolve Analytical
- Aaron Parker - SepSolve Analytical
Abstract:
Precise characterization of petroleum-derived fuels is important for the oil industry and environmental monitoring alike. However, it is a tedious and difficult task to identify each of the thousands of individual components present in these complex samples. Group-type analysis using comprehensive two dimensional gas chromatography (GC×GC) offers significant advantages over conventional chromatography, with its vastly expanded separation space and the added benefit of highly structured groupings of compounds for simple classification of hydrocarbons. To separate complex species by GC×GC, it is essential to have a highly efficient column dimension and a complementary column selectivity. High temperature resistance and flexibility of the GC column tubing are an added advantage for GC×GC. In addition, complementary selectivities like Zebron ZB-1HT Inferno, which is a non-polar 100% dimethypolysiloxane based stationary phase and Zebron ZB-50, which is a higher-polar 50% phenyl phase, offer improved separation for group type analysis. Here we demonstrate the use of reverse fill/flush flow modulation with complementary set of column chemistry for robust, repeatable and affordable GC×GC, combined with simple, yet effective, data processing workflows for group-type analysis
