Elemental Analyzer – Isotope Ratio Mass Spectrometry (EA-IRMS) system – Thermo Scientific Flash 2000 EA, Delta V Plus IRMS
Trace1310 gas chromatograph, Isolink II, ConFlo IV, and a Delta V Plus IRMS
This EA-IRMS system can simultaneously measure δ13C and δ15N of bulk organic material, as well as quantify %-Carbon and %-Nitrogen of the sample. Potential samples include sediments, plant tissues, bone, or other biological materials.
Flash 2000 EA
Combustion reactor packed with silvered cobaltous oxide and chromium oxide
Reduction reactor packed with reduced copper
Organic material is quantitatively converted to CO2 and N2 gas for IRMS analysis
Delta V Plus IRMS
Five faraday collectors configured to measure stable isotopes of C, H, N, O
Upper mass limit of 96 amu, mass resolution of 110 at 10% peak height
Ideal sample mass depends on expected sample carbon and nitrogen content. For example, sediments generally require 25 mg of material to get reliable measurements.