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Thu, 5 Aug 1999 10:11:19 -0400 |
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1.0 |
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U.S. Geological Survey/WRD |
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Dear Frank,
If you want to separate N2O from CO2 there is a paper out there, Revesz
and Coplen "Gas Chromatographic separation of Carbon Dioxide and Nitrous
Oxide for Stable Isotopic Analysis of Carbon Dioxide" Anal Chem, 1990,
62. It is not complicated at all.
Kinga Revesz
Frank Pawellek wrote:
>
> > 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,
> >
> > nick
>
> 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...
>
> Frank Pawellek
>
> +++++++++++++++++++++++++++++++++++++++++++++++
> Frank Pawellek
> Institut fuer Geologie
> Lehrstuhl fuer Sediment- und Isotopengeologie
> Ruhr-Universitaet Bochum
> Universitaetsstrasse 150
> 44801 Bochum
> Germany
> Phone: +49-234-700-5458
> Fax: +49-234-7094-571
> +++++++++++++++++++++++++++++++++++++++++++++++
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