Frank,

Using calibrated N2O in air standard(s) and ECD/GC, N2O can be measured. It
might be well to also use the Silvio's mass spectometer measurements to verify
your results. Good luck.

G. Martin
Water Sciences Laboratory
University of Nebraska
Lincoln, Nebraska, USA 68583-0844

At 07:51 AM 1/22/99 +0001, you wrote:
>Dear listmembers!
>
>As part of some ideas concerning the measurement of clean atmospheric
>and anthropogenic / biogenic CO2 I would like to enquire about the
>necessary correction for N2O in the samples.
>I understand, many people measure the concentration of N2O and
>correct their values accordingly instead of using GC to purify the
>CO2. I would appreciate to learn what possibilities of measuring N2O
>with high precision and low costs exist. Or is anyone aware of an
>alternative separation method?
>
>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
>+++++++++++++++++++++++++++++++++++++++++++++++
>
>