A simple procedure for 15N determinations in relatively large samples by emission spectrometry
- 1 January 1978
- journal article
- research article
- Published by Taylor & Francis in Communications in Soil Science and Plant Analysis
- Vol. 9 (9) , 865-872
- https://doi.org/10.1080/00103627809366859
Abstract
Discharge tubes containing argon, and NH3 separated from atmospheric N2 by condensation in a liquid‐nitrogen—cooled trap, are used to determine 15N: 14N ratios in ammonium solutions. Reduction of NH3 to N2 during sample preparation is not required; the dissociation of NH3 in the discharge tube produces sufficiently intense N2 band spectra for the isotope analysis. The method can be readily applied to the analysis of ammonium solutions derived from Kjeldahl digests of plant material.Keywords
This publication has 2 references indexed in Scilit:
- Use of Tracers For Soil And Fertilizer Nitrogen ResearchPublished by Elsevier ,1976
- Analyse isotopique de l'azote par spectrometrie optique, pour de faibles teneurs en 15nAnalytica Chimica Acta, 1968