Doctoral Researcher (f_m_x) - Organic Isotope Geochemistry (Chemiker/in)

GFZ is Germany's national centre for solid Earth research. We advance the understanding of dynamic processes to address global challenges, from mitigating the impacts of natural hazards and sustaining our habitat amid global change to responsibly managing georesources. We are part of the Helmholtz Association, the largest German scientific organisation. With around 1,200 employees as well as ca. 500 guest researchers, we contribute to the Helmholtz Research Field Earth and Environment, aligning cutting-edge research with societal relevance and international collaboration. Our work integrates multidisciplinary studies across Earth's system components, leveraging advanced technologies and infrastructure to research solutions and to transfer our knowledge to society. We are doing this in line with our vision: “Taking the pulse of our Earth to safeguard a habitable planet”. For section 3.2 Organic and Earth Surface Geochemistry ( https://www.gfz.de/en/section/organic-and-earth-surface-geochemistry/overview ) (department “Geochemistry” ( https://www.gfz.de/en/departments/geochemistry ) ), we are looking for a: Doctoral Researcher (f_m_x) - Organic Isotope Geochemistry Reference Number 11412 Project Iso-Orbi: Using high-resolution mass spectrometry for simultaneous multi-element stable isotope analysis of fatty acids in a paleoclimate context The position is part of the Iso-Orbi project, which is funded by GFZ household funds. Stable isotope analysis of individual organic molecules is typically performed by gas chromatographic separation, followed by combustion and mass spectrometry of the resulting gases, where one isotope system is analysed at a time. In this project, the candidate will use high-resolution mass spectrometry to study the compound-specific stable oxygen isotopic composition (d18O) of isolated lipids and to assess the practicality of simultaneously analysing the stable isotope composition of multiple element systems (carbon, oxygen, hydrogen). While a firs