Latest Posters

High Resolution GC-TOFMS and GC×GC-TOFMS are useful for a non-target comprehensive characterization of petroleum through a petroleomic approach, and can also provide targeted analysis of chemical markers.

High Resolution GC-TOFMS analysis with high resolution and high mass accuracy is crucial for identification of crude oil and asphaltene pyrolysis products by unequivocal chemical formula assignment, with enhancement of sensitivity and selectivity.

Thermal desorption coupled to GC×GC-TOFMS and GC-HRT were effective tools for enhancing the number of compounds identifiable in suspended sediment without wet chemistry. GC×GC-TOFMS provides high chromatographic resolution for unknown identification with 2D deconvolution and mass spectral library database searching. GC-HRT provides high mass resolution and selectivity for unknown identification with High Resolution Deconvolution™.

Proper sample preparation is critical for the analysis of complex samples. GC-HRT provides high quality, accurate mass data for:
-Spectral similarity searches (NIST, Wiley, etc.)
-Formula determination (fragment, molecular, and adduct ions)

Analyses of the M. truncatula extracts were performed, and data processing focused on qualitative analyses. This provided the opportunity for known analyte verification and unknown identification in a meaningful matrix and the demonstration of the key attributes and benefits of GC-HRT.

High resolution GC-TOFMS on the Pegasus GC-HRT allowed for quick and easy non-targeted screening of extractables from a common consumer product: the ubiquitous cell phone case. Most components could be identified with high similarity scores against commercial libraries. However, even when faced with low similarity scores against commercial libraries, such as in the case of Biphenol AF, the ability to rely on high mass accuracy allowed for confident identification of components.

-Source temperature was commonly the most significant variable for maximizing molecular ion peak area.
-Chromatographic peak shape was temperature dependant primarily for the non-volatile compounds.
-Ionization conditions were optimized to maximize molecular ion for a variety of compound classes.
-Ionization conditions do change the peak shape and peak area, which relates directly to library searchability.

We've designed and constructed a multi-cell type 3D Human Liver Tissue Model using proprietary bioprinting technology. The model contains primary human cell types which maintain form and function using scaffold free self-produced extracellular matrix. The tissue provides an ideal surrogate for human organ specific liver testing for ADME, Toxicology, or disease modeling.

GC-HRT methods utilizing hydrogen carrier gas were developed for analysis of representative specialty chemical, forensic, and metabolomic markets.

• To demonstrate a fully automated workflow for both liquid injection and headspace for GC and GC/MS.
• Automatically optimize analysis conditions and derivatization parameters.
• Automate standard preparation and derivatization procedures.
• Reduce analysts time involved in the analysis.
• Compare manual versus automated preparation of standards.

• Automated Bligh and Dyer extraction for metabolomic studies.
• Dual-column UHPLC setup for the analysis of the polar and lipidic fractions.
• Alternating acidic and basic mobile phase for the separation of the polar fraction.
• Identification of unknown compounds by SWATH HR MS2 spectra acquisition.