22nd International Mass Spectrometry Conference

Oral presentation by Dr. Christopher Rüger:

Petroleomic materials remain to be one of the greatest challenges in chemical analysis. The conversion of heavy oils or exploration of alternative sources are raising new challenging issues, such as the formation of deposits or efficient processing of residues. Thermal analysis using evolved gas analysis coupled to mass spectrometry is one powerful approach for deciphering these materials. In his talk, Christopher Rüger will highlight the importance of combining data of various mass spectrometric evolved gas analyzers in order allow for comprehensive chemical analysis and structural motives of complex petrochemical materials.

Oral presentation by Dr. Thomas Gröger (Study done by Uwe Käfer, PhD student):

High boiling petroleum fractions remain challenging to analyze on a molecular level due to their complexity and physical properties, which make them unsuitable for chromatographic techniques. Therefore, high resolution mass spectrometry has become a key technique for the analysis of these complex materials. In this study, Uwe Käfer was using a direct inlet probe (DIP) coupled to high resolution time of flight mass spectrometry for detailed chemical characterization. The presentation describes how thermal separation and exact mass information have been combined in order to enable the identification of characteristic molecular structures. Furthermore, it will be shown, that this chemical fingerprint allows for discriminating between vacuum residues derived from different crude oils and refineries.  

Oral presentation by Christian Gehm:

Poly-Aromatic Hydrocarbons (PAH) in the environment are of high importance due to their impact on human health. However, nominal concentrations of PAHs in the marine environment complicate their detection and monitoring. In his talk, Christian Gehm will present resonance-enhanced multiphoton ionization (REMPI) coupled to membrane introduction mass spectrometry (MIMS), which constitutes a promising approach regarding the direct determination of PAHs in marine systems. Concurrently, this study displays the first measurement of real world water samples with REMPI-MIMS.  

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