NC State University / College of Veterinary Medicine

Measurement of naturally occuring stable isotopes (15N, 13C and 18O) in biological material is a useful tool to investigate questions in ecological research. Measurement of the isotopic composition of a material is made by weighing all individual atoms of a sample to a standard. Isotope ratio mass spectrometry (IRMS) efficiently generates ratios of heavy to light isotopes.


NC 2550 Elemental Analyzer (NC State Stable Isotope Laboratory)

Applications to Ecosystem Health and Freshwater Mussel Conservation

   Evaluate Food Sources, Shell Growth

   Model Food Web Interactions

   Water Quality: Detect Nutrient and Contaminant Sources

Stable Isotopes can be used as a tool to detect differences between source water (Fogg et al. 1998).


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