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Polarographic determination of metal traces in gallium

Polarographische Bestimmung von Metallspuren in Gallium

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Summary

A method is proposed for determination of zinc, indium, lead and copper in gallium. The method is based on the ability of the metals to transfer from gallium into mercury. The gallium sample is placed on the stationary mercury-drop electrode. The voltammetric curve is recorded while the potential is scanned from −1.3 V to less negative values. The metal content is calculated from the peak area for the oxidation process.

Zusammenfassung

Ein Verfahren zur Bestimmung von Zink, Indium, Blei und Kupfer in Gallium wurde angegeben. Es beruht auf der Fähigkeit dieser Metalle, aus Gallium in Quecksilber überzugehen. Die Probe wird auf eine stationäre Quecksilber-Tropf-Elektrode gebracht. Während das Potential von −1,3V zu weniger negativen Werten verändert wird, erfolgt die Aufzeichnung der voltammetrischen Kurve. Aus den Peakflächen, die dem Oxydationsvorgang entsprechen, wird der Metallgehalt berechnet.

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References

  1. A. M. Dymov and A. P. Savostin, Analytical Chemistry of Gallium, Moscow: Nauka. 1968.

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  2. H. G. Plust, Patent FDR No. 1025632, 10. 3. 1956; No. 1022012, 21. 4. 1956.

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Zebreva, A.I., Levitskaya, S.A. & Aldamzharova, S.H. Polarographic determination of metal traces in gallium. Mikrochim Acta 76, 361–364 (1981). https://doi.org/10.1007/BF01196753

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  • DOI: https://doi.org/10.1007/BF01196753

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