Heading to the Gulf Coast Conference? Here’s Our List of Top Things to Not Miss!

The Gulf Coast Conference is a great opportunity to learn about the advances in the petrochemical, refining, environmental, and industrial hygiene markets. The 2018 conference is taking place in Galveston, TX on October 16 and 17. This year’s lineup boasts a number of impressive speakers, all sharing their techniques and insights!

Gulf Coast

At Booth #603, our Sales Engineers will be on-hand to discuss our latest separation science technologies and how they can help you streamline your analysis. Our GC-MS solutions offer industry-leading sensitivity, seamless data handling, and high sample throughput, giving you everything you need to dissect your most demanding applications and explore all that is in your sample. We can't wait to see you there!

Check out our list below to see the talks we are most looking forward to!

Keynote: Tapping the Vast Resources of New Chromatographic Realms

Tuesday, October 16, 11:00 am

Dr. Chris Reddy, Woods Hole Oceanographic Institution

From seeps to spills, Christopher Reddy is no stranger to oil rigs or the ocean. His work has been documented in Science, Analytical Chemistry, Energy and Fuels, The New York Times, NPR, and CNN to name a few. This keynote will focus on leveraging the recent advances in chromatography to explore oil regardless of its source or status. Comprehensive multi-dimensional gas chromatography and FTICR mass spectrometry have been key tools in Chris’s arsenal to open new realms of investigation into historical and news worthy oil samples. His talk will include data from the first ever high resolution analysis of oil from the USS Arizona at the Pearl Harbor Memorial in Hawaii. These analyses will serve as a platform to highlight the power of these multidimensional techniques when compared to standard single dimensional GC-MS for upstream and downstream application for petroleum analysis.

NEW SESSION: “Multi Dimensional Gas Chromatography”

Tuesday, October 16

Organized by LECO Corporation

9:00 AM - A Comparison of Thermal and Flow Modulated GCxGC with Dual FID-MS for Aviation Fuels

Richard Striebich - University of Dayton Research Institute

Hydrocarbon type analysis has become an important technique in the screening and evaluation of jet fuel quality and alternative fuel suitability. GCxGC is routinely used to characterize fuels for hydrocarbon type; it incorporates both quantitative FID and qualitative MS identification with flow modulation. The simultaneous FID-MS is convenient since compound class groups are more easily characterized on the MS channel and then immediately applied to the FID for quantification. Recently, thermal modulation with dual FID-TOFMS has been developed for column systems similar to the flow modulation system; results are being compared for the two different modulators for hydrocarbon type of petroleum and alternative fuels.

9:20 AM - Advances/Applications of Separations in the Mass Spectral Characterization of Petroleum

Ryan Rodgers - National High Magnetic Field Laboratory

High field FT-ICR mass spectrometry has changed the utility and expectations of complex mixture analysis by mass spectrometry over the past decade. The inherent high resolving power and high mass accuracy enable direct determination of elemental compositions to tens of thousands of individual components by mass measurement alone. However, to obtain structural information, separations are often required. Here we highlight GC x GC, prep LC, and online LC/MS techniques in petroleum / environmental science, and discuss recent advances that enable an increased compositional and structural characterization of complex petroleum samples for upstream, downstream, and environmental applications.

10:00 AM - GCxGCxMS of Diesel: A Three-Dimensional Separation Approach

Frank Wang - Exxonmobil Research and Engineering Co.

Diesel, a complex hydrocarbon mixture, was examined using comprehensive two-dimensional gas chromatography (GCxGC) and a field ionization mass spectrometer (FIMS), which preferentially yields molecular ions, providing an extra dimension for component separation. Molecular ions collected at low mass resolution can be assigned an NM-class (Nominal Mass-class) value that does not completely express hydrogen deficiency. In contrast to formulae and Z-class assignments that are possible from ultrahigh mass resolution, NM-class assignments are not unambiguous; however, the separation provided by GCxGC can result in coelution of components that differ in NM-class. Hence, compounds that are unresolved by GCxGC separation can be resolved by FIMS provided they differ in mass. This technique allows for easy, automated data processing, evaluation of coelution on quantitative analysis (e.g., using FID) and the identification of additional chemical species and structures. The development of GCxGCxMS creates new opportunities to improve the ability to determine hydrocarbon composition and structure in complex petroleum and refined petroleum products. We will demonstrate the power of the three-dimensional technology using diesel as an example.

1:00 PM - Comprehensive Two-dimensional Gas Chromatographic (GC×GC) Petroleum Fingerprinting Utilizing Traditional and Non-traditional Biomarkers and High Resolution Time of Flight Mass Spectrometry Petroleomics Spectral Analysis Tools

Robert Nelson - Woods Hole Oceanographic Institution
Christopher Reddy - Woods Hole Oceanographic Institution

In order to perform detailed studies on the source, transport, and ultimate fate of acute and chronic releases of petroleum hydrocarbons, high-resolution separations of target and non-target compounds and compound classes from complex mixtures such as petroleum frequently require techniques with high resolving power. Comprehensive two-dimensional gas chromatography (GC×GC) coupled with flame ionization detection (FID), time of flight mass spectrometry (TOF-MS), and high resolution time of flight mass spectrometry (HRT-MS) are three of the high resolution tools employed in our laboratory for high fidelity chromatographic separations of useful biomarker compounds (molecular fossils) for petroleum forensics.  Here we present a number of examples of crude oil fingerprinting examples utilizing traditional and un-traditional oil spill forensic compounds in order to gain a more complete understanding of (a) which compounds persist in the environment and (b) how we can use high resolution techniques to forensically identify specific petroleum sources.

1:40 PM - Characterizing Stationary Phases for GC x GC with Representative Probes

Bill Winniford - The Dow Chemical Company

In this study retention indices were measured for a set of 11 probe compounds of differing chemical functionality on a range of open tubular capillary columns: Rxi-1ms, Rxi-5ms, Rxi-35 Sil-ms, Rxi-17 Sil ms, Rtx-200, Rtx-2330, Rtx-Stabilwax. GCxGC applications have most often done with a non-polar (PDMS) phase followed by a polar phase (typically polyethylene glycol wax). The second most common configuration is the reverse of this, polar followed by non-polar.  The potential combinations of capillary columns with unique selectivity is well over 100. This is too many for an iterative approach and comparative retention index data is limited primarily to PDMS phases and wax phases. The results of this study give examples of how much functional groups affect retention changes with column phases. Kovats retention indices are based on the nearest Cn and Cn+1 n-paraffins to the component of interest and are intended to compensate for column, instrument and laboratory variability. But as stationary phase polarity increases hydrocarbon retention decreases significantly. In GCxGC it is important for components to elute in a relatively narrow capacity factor window on the second dimension column so it is important to also measure absolute retention.  The data from this study are useful in estimating the relative retention with new GCxGC column combinations.

2:10 PM - A Comparison of PAH Levels in Used Engine Oils by GC-TOFMS and GCxGC TOF-MS

Christina Kelly - LECO Corporation

Using a variety of techniques including comprehensive two-dimensional gas chromatography (GCxGC) and better-than-nominal resolution time-of-flight mass spectrometry (TOFMS), PAHs are separated from matrix interferences using selectivity in both orthogonality in column phases and mass accuracy. With common quantitation challenges overcome, relative PAH levels in used engine oils are compared between gasoline-powered engines in cars that routinely travel short and long distances. A direct comparison of the ratios between PAHs and their methylated counterparts provide insight into the nature of combustion by-products that occur when engines are routinely operated under different conditions.