isotope ratio mass spectrometry
In isotope ratio mass spectrometry (IRMS), element isotope ratios are
determined
very accurately and precisely. Typically, single focusing
magnetic sector
mass spectrometers with fixed multiple detectors (one per
isotope) are
used. Complex compounds are reduced to simple molecules prior
to measurement,
for example, organic compounds are combusted to CO2,
H2O
and N2.
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