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An improved air-gap electrode and its application to the measurement of carbonate in interstitial water

Verbesserte Luftspaltelektrode und ihre Anwendung zur Carbonatbestimmung in Porenwasser

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Zusammenfassung

Die Luftspaltelektrode nach Růžička wurde in einigen Punkten verbessert. Ihre Zuverlässigkeit wurde durch Anwendung einer Einstabmeßkette erhöht; ein neues System der Probezugabe bietet eine bessere Genauigkeit in der Praxis. Die Elektrode wurde zur Messung von Carbonatkonzentrationen im Betrieb von 5 · 10−2–5 · 10−4 M eingesetzt, wobei die Genauigkeit 2–9% betrug. Sie wird zur Umweltanalyse von Carbonat angewendet.

Summary

The air-gap gas sensing electrode according to Růžička is improved in several aspects. The reliability was increased by the use of a combined glass-reference electrode. A new way of sample introduction gave a better accuracy in practice. The electrode is used to determine carbonate concentrations in the range of 5 · 10−2–5 · 10−4M with an accuracy of 2–9%. The electrode is in use in the analysis of environmental carbonate.

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References

  1. Fiedler, U., Růžička, J., Hansen, E. H.: Anal. Chim. Acta 74, 423 (1975)

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  2. Růžička, J., Hansen, E. H.: Anal. Chim. Acta 69, 129 (1974)

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Authors and Affiliations

  1. Laboratory for Analytical Chemistry, The University, Croesestraat 77 A, Utrecht, The Netherlands

    F. G. Römer, L. Puyker, G. B. H. Brinkman & B. Griepink

Authors
  1. F. G. Römer
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  2. L. Puyker
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  3. G. B. H. Brinkman
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  4. B. Griepink
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Römer, F.G., Puyker, L., Brinkman, G.B.H. et al. An improved air-gap electrode and its application to the measurement of carbonate in interstitial water. Z. Anal. Chem. 289, 35–37 (1978). https://doi.org/10.1007/BF00449236

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  • DOI: https://doi.org/10.1007/BF00449236

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