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Comparison of two electrodes for the determination of ammonia and nitrogen compounds

Vergleich zweier Elektroden für die Bestimmung von Ammoniak und von Stickstoffverbindungen

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Zusammenfassung

Zwei Elektrodentypen (Flüssig-Membran und Gasdetektor) für die Ammoniakbestimmung wurden einem Vergleich unterzogen. Wichtige Charakteristiken (Ansprechzeit, Empfindlichkeit und Selektivität) werden diskutiert. Die praktische Prüfung erfolgte an Hand der Bestimmung von Ammoniak und Nitrat in Kanalwasser. Die Präzision wurde mit synthetischen Proben getestet sowie durch Vergleich mit einer volumetrischen und einer colorimetrischen Methode.

Summary

Two types of electrodes for the determination of ammonia are compared: one of the liquid membrane and one of the gas detecting type. Important electrode characteristics as response time, sensitivity and selectivity are commented. The ammonia electrode was tested in practice by analysis of ammonia and nitrate in canal water. The precision of the methods described was tested by analysis of synthetic samples, and by comparison with a volumetric and colorimetric method.

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Authors and Affiliations

  1. Department of Chemistry, University of Antwerp, Belgium

    R. Dewolfs, G. Broddin, H. Clysters & H. Deelstra

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  1. R. Dewolfs
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  2. G. Broddin
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  3. H. Clysters
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  4. H. Deelstra
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Dewolfs, R., Broddin, G., Clysters, H. et al. Comparison of two electrodes for the determination of ammonia and nitrogen compounds. Z. Anal. Chem. 275, 337–341 (1975). https://doi.org/10.1007/BF00437764

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  • DOI: https://doi.org/10.1007/BF00437764

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