Published April 10, 2020 | Version v1
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Oxygen Isotope Fractionation by Anaerobic Ammonium-Oxidizing Bacteria

  • 1. Max Planck Institute for Marine Microbiology, 28359 Bremen, Germany , Institute of Cytology, Russian Academy of Sciences, 194064 Saint Petersburg, Russia
  • 2. Max Planck Institute for Marine Microbiology, 28359 Bremen, Germany , University of Texas at El Paso, 79902 El Paso T X, USA
  • 3. University of Basel, 4056 Basel, Switzerland
  • 4. Max Planck Institute for Marine Microbiology, 28359 Bremen, Germany
  • 5. Institute of Water and Wetland Research, Radboud University Nijmegen, 6525 AJ, Nijmegen, The Netherlands

Description

Isotope composition  of nitrite, nitrate, and water, as well as concentrations of nitrite, nitrate, and ammonium, were measured during the experiments with enrichment cultures of the anammox bacterium Kuenenia stuttgartiensis. Samples were collected sequentially during the course of the anammox activity until the complete consumption of nitrite. Isotope composition of nitrite and water was measured during the abiotic experiments to follow the abiotic oxygen isotope exchange between nitrite and water. The exchange was followed over the time period of 48 h.

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