Flow injection analysis of environmental samples for nitrate using an ion-selective electrode
- 1 January 1977
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in The Analyst
- Vol. 102 (1219) , 705-713
- https://doi.org/10.1039/an9770200705
Abstract
Based on the flow injection principle and employing a nitrate electrode situated in a flow-through cell, a simple, reliable and sensitive method for the automated determination of nitrate and its use for analysing soil extracts, waste waters, fertiliser solutions and air samples are described. At a sampling rate of 90 samples per hour a standard deviation of only 1–2% is typical. A new approach to identifying and correcting for the presence of interfering species in potentiometric measurements is discussed.Keywords
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