GC-IRMS
Gas chromatograph - isotope ratio mass spectrometer (GC-IRMS) is an instrument for measuring the stable isotope ratios of organic compounds.
※We have made a lot of modification, to improve the sensitivity, accuracy, stability, and reproducibility of analysis. See details (in Japanese).
(a) Mode for measuring 13C/12C of organic compounds
Organic compounds are oxidized into CO2, H2O, and NOx in a combustion furnace, and then NOx is converted to N2 gas in a reduction furnace. After removing H2O, CO2 and N2 are introduced into the IRMS.
(b) Mode for measuring 15N/14N of organic compounds
A liquid N2 trap is installed between the H2O trap and IRMS, to remove CO2.
Autosampler (MPS, Gesterl K.K.)
Gas Chromatograph (7890B, Agilent Technologies)
Injector (PTV, Gester K.K.)
Oxidation furnace (Thermo Fisher Scientific)
Reduction furnace (Thermo Fisher Scientific)
Union (for connecting capillary and furnace without minimum leak)
Water trap (water permable Nafion membrane)
Opensplit and liquid N2 trap)
IRMS (Delta V, Thermo Fisher Scientific)
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