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Updated: Jun 28, 2026

Measurement of the Potential Rates of Dissimilatory Nitrate Reduction to Ammonium Based on 14NH4+/15NH4+ Analyses via Sequential Conversion to N2O
Published on: October 7, 2020
A novel approach to non-segmented flow analysis: Part 3. Nitrate, nitrite and ammonium in waters
D J Malcolme-Lawes1, C Pasquini
1Centre for Research in Analytical Chemistry and Instrumentation King's College London Strand London WC2R 2LS UK.
Abstract:
A high-performance continuous-flow analyser is used for the analysis of nitrate, nitrite and ammonium ion in potable waters. The results demonstrate that (1) the analyser allows the sequential determination of a number of analytes without requiring modification to the manifold; (2) the use of programmed slicing of the reaction mixture allows a wide range of analyte concentrations to be handled; and (3) that the sensitivity achieved compares favourably with the best available from conventional flow-injection analysis. The limits of detection were found to be 5 ppb for NH(4) (+), 30 ppb for NO(3) (-), and 4 ppb for NO(2) (-).
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