> Greetings ISOGEOCHEMISTS,
> I am using 13C enriched CO2 to pulse label grassland vegetation and
> was wondering if anyone had some tips/references as to the best way to
> separate the O from the 13CO2 do that I can make 18/17/16O
> determinations at natural abundance and enrichment levels?
> thanks in advance,
Of course you get the del 18 O values "automatically" when you are
measuring the 13 C. But if I remember correctly, wasn't there a
problem with N2O in the samples that is not easily removed, and
mostly has mass 46 ? That might become a problem especially when
measuring soil gas or related gases...
Institut fuer Geologie
Lehrstuhl fuer Sediment- und Isotopengeologie