Group-type Analysis of Petroleum Products by GC×GC

Poster Presentation

Prepared by R. Dhandapani1, L. McGregor2, M. Edwards3, A. Parker3
1 - Phenomenex, 411 Madrid avenue, Torrance, CA, 90501, United States
2 - Sepsolve, 22 Commerce Road, Lynch Wood,, , Peterborough, United Kingdom
3 - Sepsolve, , , United Kingdom


Contact Information: ramkumard@phenomenex.com; 732-397-1478


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 for such analyses, 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 GCxGC, it is essential to have high efficient column dimension and complimentary column selectivity. High temperature resistance and flexibility of the GC column tubing are added advantage for GCxGC. In addition, complimentary selectivity’s like ZB-1 which is a 100% Polydimethyl siloxane based stationary phase and ZB-50 which is a 50% phenyl phase offers complimentary selectivity to perform group type analysis.

Here we demonstrate the use of reverse fill/flush flow modulation with complimentary set of column chemistry for robust, repeatable and affordable GC×GC, combined with simple, yet effective, data processing workflows for group-type analysis.