Introducing the ASTM Method for PIONA Compound Analysis by GC-VUV
View the slides presented on March 30th during the PetroIndustry News webinar about ASTM Method D8071. This 34 minute method provides total PIONA characterization with a single injection of finished gasoline. Learn more…
Distinguishing isomeric representatives of “bath salts”, “plant food”, “spice”, or “legal high” remains a challenge for analytical chemistry. In this work, we used vacuum ultraviolet spectroscopy combined with gas chromatography to address this issue on a set of forty-three designer drugs. All compounds, including many isomers, returned differentiable vacuum ultraviolet/ultraviolet spectra.
This article is focused on the use of a vacuum ultraviolet absorption spectrometer (VUV) for gas chromatography (GC), within the context of flow modulated comprehensive two-dimensional gas chromatography (FM GC × GC). The features of the VUV detector were evaluated through the analysis of petrochemical and fatty acids samples. Besides responding in a predictable fashion via Beer’s law principles, the detector provides additional spectroscopic information for qualitative analysis.
The GC-VUV method for the rapid identification and quantification of synthetic drugs of abuse is described.
This article in the Feb 2017 edition of The Column describes the results of a pilot study focused on trace water determination in common organic solvents using an ionic liquid stationary phase of GC column in a GC-VUV platform.
A method is described for the analysis and deconvolution of dimethylnaphthalene isomers using gas chromatography vacuum ultraviolet (GC-VUV) spectroscopy and theoretical computations. Dimethylnapthalenes were used as a model to establish limits of peak overlap deconvolution. It was found that, under reasonable injection conditions, all of the pairwise overlapping isomers tested could be deconvoluted up to nearly two orders of magnitude (up to 99:1) in relative abundance. These experimental deconvolution values were in agreement with theoretical covariance calculations performed for two of the dimethylnaphthalene isomers.
Kevin A. Schug, Ph.D.
Associte Professor and Shimadzu Distinguished
Professor of Analytical Chemistry
The University of Texas at Arlington
Mark R. Emmett, Ph. D.
University of Texas Medical Branch Galveston
UTMB Cancer Research Center