has proper occurrent part
isotope ratio mass spectrometry
elemental analysis isotope ratio mass spectrometry
Mass spectrometry where the sample is first subject to elemental analysis (dropped onto a heated reactor which contains an oxidant–-such as copper and chromium oxide–-and combusted at 900 C to produce N2, NOx, H2O and CO2 which are reduced in a stream of helium) before the relative abundance of isotopes in the sample is determined.
CHMO:0000507
EA-IRMS
elemental analysis isotope ratio mass spectroscopy
EA-IR-MS
elemental analyser isotope ratio mass spectroscopy
elemental analyser isotope ratio mass spectrometry
elemental analysis