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Emission-spectrometric determination of trace rare-earth elements in yttrium oxide using CsCL-graphite buffer

Emissionsspektrometrische Bestimmung von Spuren Seltener Erden in Yttriumoxid unter Verwendung eines CsCl-Graphitpuffers

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Zusammenfassung

Durch den Zusatz des CsCl-Graphitpuffers werden Verdampfungsgeschwindigkeit und Emissionsintensität erhöht, die Temperatur im Bogenplasma herabgesetzt und eine gleichmäßige Verteilung der Atome und Ionen längs der Entladungsstrecke bewirkt. Empfindlichkeit und Genauigkeit der Bestimmung sind besser als bei Verwendung anderer Puffer. 10 Verunreinigungselemente können mit Nachweisgrenzen von 1–20 ppm in hochreinem Yttriumoxid bestimmt werden. Die Variationskoeffizienten liegen unter 20%.

Summary

An emission-spectrometric method was applied in the presence of CsCl-graphite buffer for the quantitative determination of traces of rare earth elements in yttrium oxide. The buffer causes an increase of the evaporation rate of the sample and of the emission intensity. The temperature in the arc plasma is decreased, and the atoms and ions of rare earths distribute uniformly along the axis of the discharge gap. The CsCl-graphite buffer enhances the sensitivity and the precision of the analytical elements to a larger extent than other buffers and permits the determination of microquantities of 10 impurity elements within limits of detection from 1 to 20 ppm in high-purity yttrium oxide. The coefficients of variation are less than 20%.

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Authors and Affiliations

  1. Government Industrial Research Institute, Osaka, Japan

    Y. Osumi, A. Kato & Y. Miyake

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  1. Y. Osumi
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  2. A. Kato
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  3. Y. Miyake
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Osumi, Y., Kato, A. & Miyake, Y. Emission-spectrometric determination of trace rare-earth elements in yttrium oxide using CsCL-graphite buffer. Z. Anal. Chem. 255, 264–268 (1971). https://doi.org/10.1007/BF00424190

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  • DOI: https://doi.org/10.1007/BF00424190

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