WHEN: Wednesday, April 4, 2018
WHERE: Duquesne University
RSVP BY: Wednesday, March 28, 2018
Dinner reservations are no longer being accepted.
5:00 PM Social Hour: Power Center Ballroom
6:30 PM Dinner: Power Center Ballroom
Business Meeting: Power Center Ballroom
Technical Meeting: Power Center Ballroom
Student Affiliate Meeting: Shepperson Suite
Kevin A. Schug, Ph.D., Professor & Shimadzu Distinguished Professor of Analytical Chemistry, Department of Chemistry & Biochemistry, University of Texas at Arlington
“Development and Application of a Vacuum Ultraviolet Detector for Gas Chromatography”
The pantheon of gas chromatography (GC) detectors has remained essentially unchanged for many years, until recently. The vacuum ultraviolet spectroscopic absorption detector for GC (GC-VUV) was introduced in 2014, and it has been demonstrated as a universal qualitative and quantitative detector with applications in many fields including food, petrochemical, flavors and fragrances, and the environment. It is highly complementary to GC-MS in that the electronic absorption spectra are more sensitive to changes in isomeric structures than electron ionization mass spectra. Simultaneous capture of absorption events between 120 and 240 nm ensures that all chemical species absorb and have unique absorption spectra. Collection at rates up to 100 Hz means that fast separations can be accommodated; in fact, chromatographic resolution can be sacrificed due to enhanced spectroscopic resolution. Different classes of compounds have similar spectral features, and this has led to unique algorithms for compound classification in applications, such as finished gasoline characterization. The gas phase absorption cross-section for a molecule is a physical property, and this leads to interesting possibilities for pseudo-absolute quantitation. In this talk, a brief history and overview of the fundamentals of GC-VUV will be given, followed by an overview of applications and interesting capabilities enabled by this technique.