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Determination of selenium in pyrite by the atomic absorption-hydride generation technique

Selenbestimmung in Pyrit über das Hydrid mit Hilfe der AAS

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Zusammenfassung

Die Pyritprobe wird mit Salpetersäure/ Salzsäure aufgeschlossen und anschließend werden die Nitrationen durch Erhitzen mit Schwefelsäure entfernt. Zur Hydriderzeugung wird starke Salzsäure zugesetzt, um Störungen durch Eisen zu verhindern. Die Ergebnisse wurden mit denen der Neutronenaktivierung verglichen, wobei sich gute Übereinstimmung ergab. Die Standardabweichung liegt im Bereich von 1–2 ppm.

Summary

Pyrite is digested in a (3 + 1) nitric-hydrochloric acid mixture. Nitrate is removed by warming the solution after addition of sulphuric acid. Strong hydrochloric acid is added to hydride prior generation to eliminate interference from iron. The result is compared with that obtained by neutron activation analysis. Standard deviation was in the range of 1–2 ppm.

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Authors and Affiliations

  1. Department of Chemistry, University of Oslo, Blindern, Oslo 3, Norway

    Ragnar Bye & Walter Lund

Authors
  1. Ragnar Bye
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  2. Walter Lund
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Bye, R., Lund, W. Determination of selenium in pyrite by the atomic absorption-hydride generation technique. Z. Anal. Chem. 313, 211–212 (1982). https://doi.org/10.1007/BF00488858

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  • DOI: https://doi.org/10.1007/BF00488858

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