Water - δD, δ18O
We employ two Picarro liquid water laser analyzers dedicated to measuring δD and δ18O of water. We are tied to the VSMOW international scale via VSMOW and SLAP for our water isotope measurements. We maintain a suite of in-house reference waters measured against VSMOW and SLAP using GISP as a quality standard.
Standard Operating Procedures
- Gupta P, Noone D, Galewsky J, Sweeney C, Vaughn BH. (2009) Demonstration of high-precision continuous measurements of water vapor isotopologues in laboratory and remote field deployments using wavelength-scanned cavity ring-down spectroscopy (WS-CRDS) technology. Rapid Communications in Mass Spectrometry 23. doi: 10.1002/rcm.4100
- O'Keefe A, Deacon DAG. (1988) Cavity ringdown optical spectrometer for absorption measurements using pulsed laser sources. Review of Scientific Instruments 59. doi: 10.1063/1.1139895
- Zalicki P, Zare RN. (1995) Cavity ringdown spectroscopy for quantitative absorption measurements. Journal of Chemical Physics 102. doi: 10.1063/1.468647