Measurement of the Potential Rates of Dissimilatory Nitrate Reduction to Ammonium Based on 14NH4+/15NH4+ Analyses via Sequential Conversion to N2OMegumi Kuroiwa 1, Keitaro Fukushima 2,3, Kazuma Hashimoto 2, Yukiko Senga 4, Tsubasa Sato 4, Chie Katsuyama 5, Yuichi Suwa 1
1Department of Biological Sciences, Faculty of Science and Engineering, Chuo University, 2Faculty & Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, 3Center for Ecological Research, Kyoto University, 4Department of Chemistry, Faculty of Science, Toho University, 5Graduate School of Integrated Arts and Sciences, Hiroshima University
A series of methods to determine the potential DNRA rate based on 14NH4+/15NH4+ analyses is provided in detail. NH4+ is converted into N2O via several steps and analyzed using quadrupole gas chromatography–mass spectrometry.