Articles | Volume 13, issue 19
https://doi.org/10.5194/bg-13-5649-2016
https://doi.org/10.5194/bg-13-5649-2016
Research article
 | 
11 Oct 2016
Research article |  | 11 Oct 2016

Nitrite consumption and associated isotope changes during a river flood event

Juliane Jacob, Tina Sanders, and Kirstin Dähnke

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Short summary
During a flood in the Elbe in June 2013, a unique co-occurrence of ammonium, nitrite and nitrate in the water column was found. SPM and nutrient concentrations as well as isotopes were analysed. We calculated an isotope effect 15ε of −10.0 ± 0.1 ‰ during net nitrite and 15ε of −4.0 ± 0.1 ‰ and 18ε of −5.3 ± 0.1 ‰ during net nitrate consumption. A simple box-model calculation results in combined riparian denitrification and 22 to 36 % nitrification.
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