Published by Ryan Schonert, VUV Analytics on September 28, 2018
Efficient PIONA Analysis with VUV Analyze PIONA+™
When I was in school taking various chemistry classes, we’d often do things the hard way to serve as a learning experience. For example, if I wanted to run samples on a new GC column with different dimensions, I’d have to translate my GC method using a pen and paper rather than an automated method translation program. To be sure, these were great learning experiences, but in the working world, time is money. When you’ve got too many things to do and a small amount of time to do them, being efficient in the lab is incredibly important.
Since I’ve joined VUV Analytics, I’ve been learning about all the ways GC-VUV can save you time, and one of the most impressive examples is PIONA data analysis. To maintain quality assurance standards, oil refineries characterize gasoline samples for their content of paraffins, isoparaffins, olefins, naphthenes, and aromatics (PIONA). As I mentioned in Part 1, PIONA analysis is traditionally performed using GC-FID per ASTM D6730-01, but GC run times can be drastically reduced using GC-VUV per ASTM D8071-17. Saving an hour or two for the GC run is great, but what about the time spent processing the data after the samples are analyzed? Can we shorten this time as well? As it turns out…yes! Instead of sitting down and characterizing each peak by hand, we can use the VUV Analytics tool designed to make PIONA analysis a breeze: VUV Analyze PIONA+™. With this software, you can load your GC-VUV run, hit go, and have your results in under 30 seconds! Figures 1-3 give a glimpse at the process.
Once processing is finished, quite a bit of data is generated. Using spectral and retention index matching, VUV PIONA+™ quickly identifies and classifies the compounds in the sample. Qualitatively, these results can be seen in Figure 2 where each peak is shaded with a color corresponding to its class. Quantitatively, the Beer-Lambert law, along with compound response factors and densities, is used to calculate values as Mass % and Volume %, as shown in Figure 3. All of this data was obtained with only a few button-clicks and about 30 seconds of automated data processing time!
Don’t forget: in the working world, time is money. VUV PIONA+ paired with GC-VUV can get you there faster!