Dr. Christian Gehm (former Scholz)

Investigation of dissolved (polycyclic) aromatic hydrocarbons by membrane inlet photoionization mass spectrometry.
Influence of marine exhaust gas treatment systems ("scrubbers") on the inputs of (polycyclic) aromatic hydrocarbons into the marine environment
fast gas chromatography for online application on marine research vessels
Further development of membrane inlet mass spectrometry for the detection of hazardous munition compounds in the sea
Resonance enhanced multiphoton ionization (REMPI) for the investigation of environmentally relevant substances.

2012 Bachelor of Science (Chemistry) at the University of Rostock
2014 Master of Science (Chemistry) at the University of Rostock
2014-2020 PhD student at the Chair of Analytical Chemistry, University of Rostock and Marine Chemistry Section, Leibniz Institute for Baltic Sea Research Warnemünde
2020 PhD (Dr. rer. nat.) at the Chair of Analytical Chemistry, University of Rostock
since 2020 research associate (postdoc) at the Chair of Analytical Chemistry, University of Rostock

AMMOTRACE - AMMunitiOn exploration by surface- and underwater-based laser mass spectrometric TRACing tEchnology (MarTera, ERA-NET-Cofund)
DFG -328082278 Hyphenation of fast gas chromatography to photo-ionisation mass spectrometry for comprehensive analysis of climate and health-relevant organic aerosol components from dynamic combustion processes (Grant number: ZI764/14-1)
DFG-289642123 Development and optimization of a membrane inlet photoionization mass spectrometer for real-time analysis of (poly)aromatic and halogenated compounds in aquatic systems (Grant number: ZI764/12-1

Gehm, C., Schnepel, K., Czech, H., Miersch, T., Ehlert, S., Zimmermann, R. 2021. Hyper-fast gas chromatography and single-photon ionisation time-of-flight mass spectrometry with integrated electrical modulator-based sampling for headspace and online VOC analyses. The Analyst. DOI:10.1039/D1AN00114K.
Gehm, C., Streibel, T., Ehlert, S., Schulz-Bull, D., Zimmermann, R. 2020. External trap-and-release membrane inlet for photoionization mass spectrometry: Towards fast direct analysis of aromatic pollutants in aquatic systems. Rapid communications in mass spectrometry : RCM. DOI:10.1002/rcm.8863.
Gehm, C., Streibel, T., Ehlert, S., Schulz-Bull, D., Zimmermann, R. 2019. Development and Optimization of an External-Membrane Introduction Photoionization Mass Spectrometer for the Fast Analysis of (Polycyclic)Aromatic Compounds in Environmental and Process Waters. Anal. Chem. 91, 24, 15547–15554. DOI:10.1021/acs.analchem.9b03480.
Gehm, C., Streibel, T., Passig, J., Zimmermann, R. 2018. Determination of Relative Ionization Cross Sections for Resonance Enhanced Multiphoton Ionization of Polycyclic Aromatic Hydrocarbons. Appl. Sci. 8, 9, 1617. DOI:10.3390/app8091617.