DOI: 10.1039/A605155C
(Paper)
Reference Section for: Analyst, 1997, 122, 89-93
Determination of Ammonia in Waste Waters by a Differential pH Method Using Flow Injection Potentiometry and a Nonactin-Based Sensor
(Note: The full text of this document is currently only available in the PDF Version )
Hongda Shen, Terence J. Cardwell and Robert W. Cattrall
Abstract
A method is described for the determination of total ammoniacal nitrogen in waters using an ammonium ion-selective sensor based on nonactin. The flow injection method relies on the measurement of the potential of the sensor at two pH values, 6.0 and 9.4, and the use of a mathematical expression to calculate the total ammoniacal nitrogen concentration. The method also compensates for the interference from moderate concentrations of other cations such as potassium and sodium.
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