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Laboratory of Isotope Biogeochemistry

The Laboratory of Isotope Biogeochemistry is a scientific technical facility of the Bayreuth Center of Ecology and Environmental Research (BayCEER) headed by Prof. Dr. Gerhard Gebauer.

 

Duties:

  • Abundance analysis of stable isotopes (δD, δ13C, δ15N, δ18O) for the BayCEER members
  • Development of advanced analytical techniques for the abundance analysis of stable isotopes together with the scientific units of BayCEER
  • Advice of the scientific units in experimental design and practical experimentation with stable isotopes at natural abundance level and as tracers
  • Own research projects using stable isotope abundance analysis
  • Teaching courses on stable isotope applications in biogeochemistry using the available equipment

Services:

  • Simultaneous determination of C and N isotope abundances13C, δ15N) in the natural abundance range and of C and N concentrations in organic and inorganic solid samples using an EA-IRMS coupling
  • Simultaneous determination of H/D and O isotope abundances (δD, δ18O) in the natural abundance range and of H and O concentrations in organic and inorganic solid and liquid samples using a TC-IRMS coupling
  • Substance specific determination of N, O and C isotope abundances15N, δ18O, δ13C) of atmospheric trace gases (specifically N2O and CH4) in the natural abundance range using a PreCon-GC-C-IRMS coupling
  • Simultaneous determination of C and N isotope abundances and of C and N concentrations in organic and inorganic solid samples from tracer experiments using an EA-IRMS coupling. The 13C or 15N enrichment of these samples must be below an upper threshold of 1000 %o. For this reason a consultation of Prof. Gebauer already during the planning phase of tracer experiments is urgently recommended.