Reducing interferences by amino acids in the determination of ammonium by an automated indophenol method
- 1 June 1990
- journal article
- research article
- Published by Taylor & Francis in Communications in Soil Science and Plant Analysis
- Vol. 21 (9-10) , 831-835
- https://doi.org/10.1080/00103629009368272
Abstract
Positive interference by amino acids in the determination of ammonium in soil extracts by automated indophenol methods can be minimized by using the nitroprusside catalysed reaction. Hydrolysis of amino acids is virtually eliminated because this reaction enables the use of low sample volumes, reagent concentrations and reaction temperatures.This publication has 3 references indexed in Scilit:
- Amino acid interference with ammonium determination in soil extracts using the automated indophenol methodCommunications in Soil Science and Plant Analysis, 1989
- The berthelot or indophenol reaction and its use in the analytical chemistry of nitrogen. A reviewThe Analyst, 1984
- Automated colorimetric determination of ammonium ions in soil extracts with ‘Technicon AutoAnalyzer II’ equipmentNew Zealand Journal of Agricultural Research, 1975