SIMULTANEOUS MEASUREMENT OF SIX CO2 ISOTOPES
Aerodyne’s carbon dioxide “clumped” isotope monitor is a dual laser instrument which provides the excellent sensitivity and time response (0.1 seconds) of our standard CO2 isotope monitor but also measures the doubly substituted or clumped isotopes of carbon dioxide: 13CO18O and 13CO17O.
The isotopic measurement precisions for a one second measurement at typical ambient atmospheric mixing ratios of CO2 (400 ppm) are:
|13C16O16O/CO2||0.1 per mil|
|12C16O18O/CO2||0.1 per mil|
|12C16O17O/CO2||0.35 per mil|
|13C16O18O/CO2||2.3 per mil|
|13C16O17O/CO2||6.7 per mil|