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The Stable Isotope Lab (ENRI SIL) is a state-of-the-art analytical facility that quantifies stable isotope ratios to assist researchers studying processes on short and long time scales. The lab utilizes two ThermoFinnigan Continuous Flow Isotope Ratio Mass Spectrometers (Delta Plus XP and Delta V Advantage) with four gas preparation systems for the measurement of the stable isotopes of carbon, nitrogen, hydrogen, and oxygen (未D, 未13C, 未15N, and 未18O) on a diversity of natural samples (plant, animal, soil, sediment, etc.). The lab also employs three Picarro Wavelength Scanned Cavity Ring-Down Spectrometers for the measurement of the stable isotopes of hydrogen and oxygen in liquid water samples.  The lab is currently capable of accommodating natural abundance samples for all the species mentioned above. ENRI SIL is also able to analyze liquid water samples enriched in 未D, 未18O or both.

Operations are conducted by lab manager Dan Crawford. To contact the Stable Isotope Lab, please email uaa_isotope@alaska.edu.