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Study on the elimination of interferences in the determination of calcium by atomic absorption spectrophotometry

Untersuchung zur Eliminierung von Störungen bei der Bestimmung von Calcium mit Hilfe der Atomabsorptions-Spektralphotometrie

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Zusammenfassung

Optimale Bedingungen und Beeinflussung durch 53 verschiedene Ionen wurden untersucht. Bei Verwendung der N2O/Acetylen-Flamme werden Störungen durch Elemente mit niedrigen Ionisations-potentialen verursacht. In der Luft/Acetylen-Flamme stören eine Reihe von Kationen und Anionen durch Bildung hitzebeständiger Verbindungen. Die Anwendung der Standardzugabe-Methode ergab nur befriedigende Resultate in Kombination mit einem Strontiumzusatz.

Summary

Optimum conditions and the influence of 53 ions on the determination of calcium by atomic absorption spectrophotometry have been investigated. In the nitrous oxide-acetylene flame interferences are caused by elements with low ionisation potentials. In the air-acetylene flame a number of cations and anions interfere by the formation of refractory compounds. The simple standard additions procedure was unable to overcome these interferences in the concentration ranges investigated, but did give accurate results when used in combination with a releasing agent (strontium).

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Authors and Affiliations

  1. Department of Analytical Chemistry, The Queen's University, Belfast, Northern Ireland

    W. A. Magill & G. Svehla

Authors
  1. W. A. Magill
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  2. G. Svehla
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Magill, W.A., Svehla, G. Study on the elimination of interferences in the determination of calcium by atomic absorption spectrophotometry. Z. Anal. Chem. 268, 177–180 (1974). https://doi.org/10.1007/BF00430600

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  • DOI: https://doi.org/10.1007/BF00430600

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