Presentation Profile
GCVUV Simulated Distillation
Currently Scheduled: 10/15/2025 - 1:00 PM - 1:25 PM
Room: Bluebonnet
Main Author
Dan Wispinski - VUV Analytics
- Derrell Sloan - VUV Analytics
Abstract:
A new gas chromatography with vacuum ultraviolet absorption spectroscopy detection (GC-VUV) technique for determining simulated distillation of middle distillates will be introduced. Traditional gas chromatography simulated distillation uses a non-polar column to elute components in order of boiling point. The known boiling points of n-paraffins are used to calibrate the time axis. The boiling range distribution of a sample run under the same conditions can thus be obtained. GC FID simulated distillation uses cumulative time slices to determine BP distribution and cut points. ASTM D8267 (aromatics in jet fuel) and ASTM D8368 (aromatics and FAME in diesel fuel) are specification approved GCVUV methods that use time interval deconvolution to determine hydrocarbon types. These GCVUV sequential time intervals contain holistic hydrocarbon type quantitative information. A new GCVUV software feature allows the calculation of BP distribution and cut point intervals without modification of the standard GCVUV instrument parameters. The BP data is available in total % off by mass and volume. Additionally, a saturates only and aromatics only BP distribution can also be obtained. GCVUV BP distribution data will be compared to ASTM D2887 BP distribution data from jet fuel and diesel fuel proficiency test samples.
