Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.1080/10256016.2012.641543
Titel (primär) Measuring nitrification in sediments – comparison of two techniques and three 15NO3- measurement methods
Autor Jäntti, H.; Leskinen, E.; Stange, C.F.; Hietanen, S.
Quelle Isotopes in Environmental and Health Studies
Erscheinungsjahr 2012
Department BOPHY
Band/Volume 48
Heft 2
Seite von 313
Seite bis 326
Sprache englisch
Keywords ammonia oxidation; isotope measurements; methods and equipment; nitrate; nitrification; nitrogen-15; sediment; stable isotope tracer techniques
Abstract

Nitrification is a crucial process in sediment nitrogen cycling. We compared two 15N tracer-based nitrification measurement techniques (isotope pairing technique (IPT) combined with 15N nitrate pool dilution and 15N ammonium oxidation) and three different 15N analyses from bottom water nitrate (ammonia diffusion, denitrifier and SPINMAS) in a sediment mesocosm. The 15N nitrate pool dilution technique combined with IPT can be used to quantify the in situ nitrification, but the minimum detection limit for the total nitrification is higher than that in the 15N ammonium oxidation technique. The 15N ammonium oxidation technique, however, is not applicable for sediments that have high ammonium content. If nitrate concentration and the amount of 15N label in the sample are low, the 15N nitrate analysis should be done with the denitrifier method. In higher 15N concentrations, the less sensitive SPINMAS method can also be applied. The ammonia diffusion method is not suitable for bottom water 15N nitrate analyses.

dauerhafte UFZ-Verlinkung https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=12342
Jäntti, H., Leskinen, E., Stange, C.F., Hietanen, S. (2012):
Measuring nitrification in sediments – comparison of two techniques and three 15NO3- measurement methods
Isot. Environ. Health Stud. 48 (2), 313 - 326 10.1080/10256016.2012.641543