Stable Isotope Research Unit

The Stable Isotope Research Unit contains two PDZ-Europa 20/20 Isotope Ratio Mass Spectrometers. Prep units include a Sercon GSL with Gilson gas autosampler for 13C, 15N, and 18O anlaysis of gas samples and combustion of solid and liquid samples for 13C and 15N analysis; a Europa SL with TCD for combustion of solid and liquid samples; a Europa TG gas purification module for trace gas analysis; and an Agilent 6890 GC with a PDZ-Europa Orchid combustion interface for compound-specific isotope analysis. The Agilent capillary GC is used primarily for the separation of fatty acid methyl esters (FAME) but can also be used for the separation of other carbon containing compounds such as carbohydrates and amino acids.

Precision

The PDZ-Europa 20/20 has a precision of + 0.3‰ 15N and + 0.2‰ 13C at natural abundance levels.

Applications of Analysis

  • Agronomy
    • Fertilizer Recovery
    • C Cycling and Sequestration
    • Soil N cycling
  • Marine Science
    • Nitrogen Recycling
    • Ammonium Regeneration
  • Nutrition
    • Protein Metabolism
    • Food Adulteration
  • Environment and Ecology
    • Nitrate in Groundwater
    • Photosynthesis and Gas Exchange
    • Trace Gas Analysis