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New formula for combating the greenhouse gas nitrous oxide
Date:4/2/2008

imilar to the process of anaerobic oxidation of ammonium and which was called codenitrification, after the familiar process of denitrification. Despite this, even 15 years after the discovery of codenitrification, scientists still work on the assumption that when nitrogen from the soil is broken down, it is only denitrification that is responsible for the release of molecular nitrogen (N2). Using the 15N isotope technique and the new mathematical approach, it is now possible to calculate precisely the N2 released from the soil during both processes denitrification and codenitrification. An initial, very recent study by two British scientists has already come to the surprising conclusion that up to 92 per cent of microbially released N2 is attributable to the process of codenitrification. If these initial results can be confirmed and extended to other soils around the world, this would completely change our current understanding of N2 emissions from the soil. The two scientists Oliver Spott and Florian Stange will be using the new equations to tackle this question in collaboration with international scientists.


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Contact: Tilo Arnhol
presse@ufz.de
49-341-235-1635
Helmholtz Association of German Research Centres
Source:Eurekalert  

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