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Zur analytischen Verwertbarkeit von Nitrit-Tripelsalzen

The analytical utilizability of nitrite-triple salts

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Zusammenfassung

Strontium bildet ein schwerlösliches Tripelsalz der Zusammensetzung K2SrNi(NO2)6, das zum Nachweis in der qualitativen Analyse herangezogen werden kann. Beim Mischen der Strontiumlösung mit einem Nickelsalz und Kaliumnitrit in Gegenwart eines Acetatpuffers entstehen alsbald hellbraune stark lichtbrechende Würfel. Barium gibt die gleiche Reaktion, Calcium nicht. In größerem Überschuß stört Calcium.

Summary

Strontium forms a difficultly soluble triple salt of the composition K2SrNi(NO2)6, which can be used for detection purposes in qualitative analysis. When the strontium solution is mixed with a nickel salt and potassium nitrite in the presence of an acetate buffer, light brown strongly refractive cubes appear at once. Barium gives an analogous reaction, but not calcium. Calcium interferes if present in large excess.

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Literatur

  1. B. W. G. Wyckoff, Kristallstrukturen, 3. Bd. New York: Wiley. 1965. S. 376.

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  2. H. Behrens undP. C. D. Kley, Mikrochemische Analyse, 4. Aufl. Leipzig: L. Voß. 1921.

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  3. J. I. Adams, A. A. Benedetti-Pichler undJ. T. Pryant, Mikrochem.26, 29 (1939).

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Author notes

  1. Helmut F. Hetzel

    Present address: , BRD-235 Neumünster, Ulmenweg 41, Deutschland

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    1. Helmut F. Hetzel
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    Hetzel, H.F. Zur analytischen Verwertbarkeit von Nitrit-Tripelsalzen. Mikrochim Acta 59, 54–56 (1971). https://doi.org/10.1007/BF01216882

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    • DOI: https://doi.org/10.1007/BF01216882

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