University of Gothenburg

ISOGOT – Infrastructure for isotope determination within Earth System Sciences

Values of isotopes of light elements (C, N, S, O, H) in different domains of the Earth System reveal much information about the processes behind the transformations of elements via biogeochemical and biological cycles.

The ISOGOT facility at the Department of Earth Sciences provides analytical capacity for the determination of stable isotopes in various media as well as elemental/nutrient analyses. We also provide greenhouse gas analysis. Contact:

1) Isotope Ratio Mass Spectrometer

  • Our working horse is a SerCon 20-22 IRMS
  • Coupled to different sample preparation units
Picture of a machine

1b) IRMS – Trace Gas unit

Picture of a machine
  • CryoPrep2 unit for measurements of stable isotopes in Greenhouse gases CO2, N2O and CH4 as well as N2

1a) IRMS – Elemental analyzer

Picture of a machine
  • Elemental analyzer for solid samples
  • Combustion unit for 13C, 15N and 34S isotope analysis (left)

3) Isotope Ratio Infrared Spectrometer

A computer in a lab
  • DeltaRay (Thermo Scientific)
  • Online measurements of CO2 isotopes (13C and 18O)
  • Field deployable and for laboratory experimentation

4) Water isotope laser

computer in a lab
  • L2130-i (Picarro)
  • Measure water isotopes (18O and 2H) in solids, liquids and vapor
  • For field and laboratory applications

6) TOC/TN analyzer

TOC/TN analyzer
  • TOC-L + TN unit (Shimadzu)
  • Measurements of Total Organic Carbon, Dissolved Organic Carbon and Total Nitrogen in aqueous samples

7) Ion Chromatograph

Ion Chromatography
  • Eco IC (Metrohm)
  • For measurements of anions, cations, and polar substances in aqueous samples  

8) Gas Chromatograph

Gas Chromatograph
  • 7890-0467 GHG Analyzer (Agilent)
  • Head space GC equipped with 3 detectors (TCD, ECD & FID)
  • Simultaneous measurements of concentrations of CO2, N2O and CH4


  • Agilent 7890A GC coupled to an Isoprime GC 5 interface and an Isoprime 100 IRMS
  • Multi-element (C, H) compound-specific isotope analysis (CSIA) of organic compounds