Stable Isotopes

• ¹³C and ¹⁵N in solids
• ¹⁸O in solids
• ¹³C in methane (CH₄)
• ¹³C in carbon dioxide (CO₂)
• ¹³C in carbon dioxide (CO₂) (in situ)
• ¹⁵N in nitrous oxide (N₂O) and nitrogen gas (N₂)
• ¹⁸O and D in water (H₂O)
• ¹⁸O and ¹⁵N in nitrate (NO^3-) via the denitrifier method
• ¹⁵N in ammonium (NH₄⁺)
• ¹³C and ¹⁸O in cellulose
• ¹³C and D in n-alkanes
• ¹³C in fatty acid methyl ester (FAME)
• ¹⁵N in amino acids (only enriched samples via GC-MS)
• ¹³C in amino sugars

Radioactivity

• Wallac Guardian liquid scintillation for e.g. enriched ¹⁴C, ³H, ³²P or total α and β radioactivity
• Wallac 1220 Quantulus liquid scintillation
• Canberra high sensitive Germanium-detector for gamma ray detection (e.g. ²¹⁰Pb, ¹³⁷Cs, ⁷Be)

Stable Isotopes - Bulk analysis

• EA-IRMS (Elemental Analyser - Isotope Ratio Mass Spectrometer)
• TC-EA-IRMS (Thermal Conversion Elemental Analyser - Isotope Ratio Mass Spectrometer)

Stable Isotopes - Compound specific analysis

• TG-IRMS (Trace Gas - Isotope Ratio Mass Spectrometer)
• GC-IRMS (Gas Chromatography - Isotope Ratio Mass Spectrometer)
• LC-IRMS (Liquid Chromatography - Isotope Ratio Mass Spectrometer)
• Cavity Ring Down Laser Spectroscopy (CRDS)