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Biogeosciences An interactive open-access journal of the European Geosciences Union
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Volume 14, issue 6
Biogeosciences, 14, 1365-1381, 2017
https://doi.org/10.5194/bg-14-1365-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
Biogeosciences, 14, 1365-1381, 2017
https://doi.org/10.5194/bg-14-1365-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 20 Mar 2017

Research article | 20 Mar 2017

Gas chromatography vs. quantum cascade laser-based N2O flux measurements using a novel chamber design

Christian Brümmer et al.
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Short summary
We present a novel chamber design for measuring soil–atmosphere N2O fluxes and compare the performance of a commonly applied gas chromatography (GC) setup with laser-based (QCL) concentration detection. While GC was still a useful method for longer-term investigations, we found that closure times of 10 min and sampling every 5 s is sufficient when using a QCL system. Further, extremely low standard errors (< 2 % of flux value) were observed regardless of linear or exponential flux calculation.
We present a novel chamber design for measuring soil–atmosphere N2O fluxes and compare the...
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