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Analysis for the rare-earth elements by neutron activation and Ge(Li) spectrometry

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Abstract

A procedure for analysis of 12 of the rare-earths, tested on more than a hundred samples of rocks and minerals, is described. Carrier is added for each element to be determined. Samples are fused with Na2O2. The rare-earths are separated as a group, then precipitated and mounted as oxalates for Ge(Li) spectrometry. Following radioassay, chemical yields for the individual rare-earths are obtained by irradiation and counting of the carrier. About two months are needed to obtain complete data for a set of four samples, but many samples are analyzed concurrently. The precision and accuracy exceed ±5 per cent for 10 of the elements in 0.1 to 0.5 g samples of common rocks.

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Authors and Affiliations

  1. Department of Chemistry, University of Wisconsin, Madison, Wisconsin, USA

    E. B. Denechaud, P. A. Helmke & L. A. Haskin

Authors
  1. E. B. Denechaud
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  2. P. A. Helmke
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  3. L. A. Haskin
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Denechaud, E.B., Helmke, P.A. & Haskin, L.A. Analysis for the rare-earth elements by neutron activation and Ge(Li) spectrometry. J. Radioanal. Chem. 6, 97–113 (1970). https://doi.org/10.1007/BF02513904

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  • DOI: https://doi.org/10.1007/BF02513904

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