The KCCAMS facility operates an isotope ratio mass spectrometer (IRMS, DeltaPlus, Thermo Scientific) for the analysis of carbon and nitrogen stable isotope ratios (δ13C, δ15N). These data can provide information about the cycling of carbon and nitrogen in the environment and, or the sources of carbon and nitrogen in a sample.

The instrument accepts (a) gaseous samples in the form of CO2 in helium for the analysis of δ13C via a Gas Bench II (Thermo Scientific) and (b) organic solids via an elemental analyzer (EA, Fisons NA 1500 NC) for the analysis of δ13C and δ15N and carbon and nitrogen concentrations.


W. M. Keck Carbon Cycle Accelerator Facility 
Department of Earth System Science
University of California, Irvine
Irvine, CA 92697-3100, USA

Paleoclimate &
Accelerator Mass Spectrometry

J. Southon (
H. Martinez De La Torre (
G. Santos (
B321 Croul Hall
Phone: +1 949 824-3674

Marine Biogeochemistry
E. Druffel (
S. Griffin (
2212 Croul Hall
Phone: +1 949 824-3286

Terrestrial Biogeochemistry,
Aerosol & MICADAS

X. Xu (
C. Czimczik (
G. Santos (
2222 & 2313 Croul Hall
Phone: +1 949 824-3444