Dr. Markus Greule

Education and Professional Career

Education and Career Path

• Since 01/2021: Research Scientist, Institute of Geosciences, Heidelberg University, Biogeochemistry Research Group
• 06/2014 – 12/2020: Academic Councilor, Institute of Geosciences, Heidelberg University, Biogeochemistry Research Group
• 11/2013 – 05/2014: Research Scientist, Institute of Geosciences, Heidelberg University, Biogeochemistry Research Group
• 2008 – 2013: Research Scientist, Max Planck Institute for Chemistry, EURYI Junior Group “ORCAS”, Department of Atmospheric Chemistry
• 02/2008 – 12/2008: Postdoctoral position, Max Planck Institute for Chemistry (fellowship), EURYI Junior Group “ORCAS”, Department of Atmospheric Chemistry
• 2003 – 2007: Research Associate, Institute of Food Chemistry, J.W. Goethe University Frankfurt/Main
• 2007: Doctorate (Dr. phil. nat.) in Food Chemistry, J.W. Goethe University Frankfurt/Main
• 2003 – 2007: Internship as part of the state examination in Food Chemistry, State Office for Health and Food Safety Hessen, Wiesbaden
• 05/2002 – 10/2002: Internship as part of the state examination in Food Chemistry, Fresenius Kabi, Bad Homburg
• 2002: First State Examination (Food Chemistry)
• 1997 – 2002: Studies in Food Chemistry, J.W. Goethe University Frankfurt/Main

Research Focus

Research on the stable isotope systems of hydrogen, carbon, oxygen, chlorine, and other molecules in biogeochemistry.

Specific Research Topics:

• δ¹³C and δ²H signatures of methoxy groups (-OCH₃) for paleoclimatic studies (mainly tree rings), authenticity testing (especially vanillin), and studies on the biosynthesis of organic volatile C1 compounds (e.g., CH₄, CH₃Cl)
• Investigation of the atmospheric methyl chloride budget using stable isotope signatures of three elements (δ²H, δ¹³C, and δ³⁷Cl) (DFG project since 02/2022)
• Formation and degradation of methyl chloride in plants
• Development of enrichment systems for trace gas analysis in the ppmv to pptv range
• Development of new methods and reference materials for reliable measurements of stable isotope ratios

Researchgate