| Schmidt, BHM; Matzner, E: Abiotic reaction of nitrite with dissolved organic carbon? Testing the ferrous wheel hypothesis, Biogeochemistry, 93, 291-296 (2009) | |
| Abstract: The Ferrous Wheel Hypothesis (Davidson et al. 2003) postulates the abiotic formation of dissolved organic N (DON) in forest floors, by the fast reaction of NO2 − with dissolved organic C (DOC). We investigated the abiotic reaction of NO2 − with dissolved organic matter extracted from six different forest floors under oxic conditions. Solutions differed in DOC concentrations (15–60 mg L−1), NO2 − concentrations (0, 2, 20 mg NO2 −-N L−1) and DOC/DON ratio (13.4–25.4). Concentrations of added NO2 − never decreased within 60 min, therefore, no DON formation from added NO2 − took place in any of the samples. Our results suggest that the reaction of NO2 − with natural DOC in forest floors is rather unlikely. |
Aktuelle Termine
Aktuelle Termine
| BayCEER-Kolloquium: |
|---|
| Do. 16.05.2024 Dimethylated thioarsenates: potentially dangerous hidden arsenic species in rice and rice products |
| Dialog: |
| Fr. 17.05.2024 Forum Zukunftswald: Bodenvegetation: Erkennen und deren Bedeutung für den Waldbau |
| Ökologisch-Botanischer Garten: |
| So. 05.05.2024 Führung | Faszination Englische Gärten: Gestaltung und Pflanzen |
| So. 05.05.2024 Midissage | da capo - Ausstellung von Doris Bocka |
| Mi. 15.05.2024 Kurzführung | "Botanische Mittagspause" |