Determining nitrogen-15 in ammonium by producing nitrous oxide

• Published in: Soil Science Society of America journal Vol. 61
• Main Authors: Laughlin R.J, Stevens R.J, Zhuo S
• Format: Journal Article
• Language: English
• Published: 01.03.1997
• Subjects: ammonia; ammoniac; ammonium compounds; amoniaco; analisis del suelo; analyse de sol; azote; bromides; bromure; bromuros; catalizador; catalyseur; catalysts; cobre; compose de l' ammonium; compuestos de amonio; contenido de nitrogeno; copper; cuivre; ensayo; gases; gaz; hidroxido sodico; hydroxyde de sodium; isotope radioactif; nitrogen; nitrogen content; nitrogeno; nitrous oxide; oxidacion; oxidation; oxido nitroso; oxydation; oxyde nitreux; radioisotopes; radioisotopos; sodium hydroxide; soil testing; teneur en azote; testage; testing

Standard procedures for determining 15N in the NH4+ fraction of 2 M KCl soil extracts convert NH4+ to N2 prior to isotope-ratio mass spectrometry. We developed a new gas-phase method for determining 15N in NH4+ by producing N2O. Producing N2O means that atmospheric contamination by N2 at natural abu...