Coronavirus information

In response to the COVID-19 global pandemic, the University of Alaska Anchorage has taken steps to protect the health and safety of our campus community. Visit the University of Alaska Coronavirus Information website to learn how UAA and the university system are responding to this situation. Find links to communications, policy guidance, resources and information about the university's community restrictions, which apply to all faculty, staff and students. The UAA Student Health and Counseling Center remains open at this time to serve UAA students. For information about COVID-19 symptoms and current health recommendations, visit the CDC website and the Alaska Department of Health and Social Services.

Stable Isotope Lab

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 Advantage V) with four gas preparation systems for the measurement of the stable isotopes of hydrogen, carbon, nitrogen, oxygen and sulfur (δD, δ13C, δ15N, δ18O and δ34S) on a diversity of natural samples (plant, animal, soil, sediment, water, and atmospheric gas). 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 δD, δ18O or both.

Operations are conducted by lab managers and research analysts Annie Brownlee and John Ferguson. To contact the Stable Isotope Lab, please email