Achieving Group-type Separations in Petroleum Product Analyses using Comprehensive Two-dimensional Gas Chromatography (GCxGC)

Wednesday, March 10, 2021: 8:30 AM - 8:50 AM

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Description

Comprehensive two-dimensional gas chromatography (GCxGC) has been widely used in the petroleum industry to provide the necessary chromatographic resolution to separate individual chemical components of complex mixtures. Applicable for a range of GC-amenable products from lighter boiling gasoline blending products at less than 30°C down to heavier boilers like heavy gas oil at greater than 650°C, the use of two complementary GC column phases has led to the ability to clearly interpret bands of separation that group analytes into classes of structurally similar compounds. Software tools that interact with contour plots displaying GCxGC data have been widely utilized for this group-type separation, leading to the development of routine methods in both research and quality-control labs for assessment of crude materials as well as finished products. Adoption of these analytical and data treatment techniques for petroleum product analysis in organizations such as ASTM International is ongoing, especially for group-type speciation of middle distillates as an alternative to more traditional PIONA analysis, which requires much longer analysis times. In this presentation, streamlined workflows from GCxGC data collection to final results summaries will be explored with a variety of back-end detectors including time-of-flight mass spectrometers (TOFMS) for identification of structural classes and flame ionization detectors (FID) for comparative quantitation, covering the application of improved software tools for generating reusable group-type classification templates, ultimately simplifying the chemical descriptions of these complex petroleum products.

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Additional Info

Keywords: Please select up to 4 keywords ONLY:
Chromatography - Other,Data Analysis and Manipulation,Hyphenated Techniques - Other,Fuels/Petrochemical