d18O and d2D in seawater

Picarro L2130-i Water Isotope Analyzer

 δ18O and δ2D isotopes

Freshwater and seawater samples are analyzed on this Picarro water isotope analyzer.


One ul of water is injected, vaporized and introduced into the analyzer where readings of d18O and d2D are obtained using the cavity ring down spectrometry (CRDS) technique.

Associated Projects


  • Walker, S. A., Azetsu-Scott, K., Normandeau, C., Kelley, D. E., Friedrich, R., Newton, R., Schlosser, P., McKay, J. L., Abdi, W., Kerrigan, E., Craig, S. E. and Wallace, D. W. R. (2015), Oxygen isotope measurements of seawater ( H218O/ H216O): A comparison of cavity ring-down spectroscopy (CRDS) and isotope ratio mass spectrometry (IRMS). Limnology and Oceanography: Methods.doi: 10.1002/lom3.10067
  • Kerrigan, E. A., Kienast, M., Thomas, H., & Wallace, D. W. (2017). Using oxygen isotopes to establish freshwater sources in Bedford Basin, Nova Scotia, a Northwestern Atlantic fjord. Estuarine, Coastal and Shelf Science.