Geo-Biosphere Interactions

Dr. Callum Banfield

Lab Manager and Radiation Protection Officer

I am a staff scientist and lab manager with more than ten years experience on isotope applications on the field and lab scale - and especially interested in solving technical and analytical challenges to make research possible.

My responsibilities for the labs of the Geo-Biosphere group include

  • radioisotope labs (14C, 33P, 3H and, in future, 55Fe), and CSIA labs (15N, 18O, 2H, 13C),
  • including the radiation protection for three 57Co Mössbauer specs and 63Ni-electron capture detectors for different ZAG groups
  • method development for stable and radioactive isotope applications (GC-C-IRMS, GC-MS, LC-MS, GC-ECD/FID, low-level scintillation counting, phosphor imaging).
  • technical solutions for lab experiments (e.g., 3D printing) and field experiments (e.g., cm-accuracy GPS).

Furthermore, I take care of

  • the biosafety for the Dippold, Mason-Jones and Kappler groups (German: "S1-Projektleitung"),
  • our EU pest quarantine station (EU 2016/2031, German: "Quarantäne-Station für Unionsquarantäneschädlinge"),
  • and I am an instructor for lab technicians (German: "Ausbilderschein"), currently training two apprentice lab techs.

I am head of the working group "Isotopes in Soil Science" of the German Soil Science Society (German).

GUZ, 5U36
 +49 7071 29-74797

Research projects


  • Prof. Eusun Han, Denmark: Sapere Aude: DFF-Starting Grant (PerennialTraits: Showcasing de novo domestication of perennial grain crops for profitable, resilient and sustainable agriculture)
  • Dr. Thomas Guillaume, Agroscope, Switzerland: MaCN (Managing soil organic matter stabilization pathways to increase carbon and nitrogen use efficiency in croplands


Since Oct 2021
Lab Manager for the GBI group

at the University of Tuebingen, Germany

Lab Manager of the Joint Soil Scientific Laboratories

at the University of Goettingen, Germany

PhD Student

at the University of Goettingen, Germany

Study of Geoecology

at the KIT Karlsruhe, Germany

Selected publications



  • Ulrich-Babel Medal 2019 of the German Soil Science Society for my dissertation