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Journal of Radioanalytical Chemistry

, Volume 20, Issue 2, pp 619–626 | Cite as

Rare earth analysis of usgs rocks SCo-1 and STM-1

Evaluation of standards for homogeneity and of the precision and accuracy of a procedure for neutron activation analysis
  • S. T. Kosiewicz
  • P. J. Schomberg
  • L. A. Haskin
Article

Abstract

Twelve of the rare-earth elements (La, Ce, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Yb and Lu) were determined by radiochemical neutron activation analysis on two samples per bottle from two bottles each of SCo-1 (Cody shale) and STM-1 (nepheline syenite). The data provide no evidence for differences in REE concentrations between bottles of the same rock. Values of the concentrations for most of the REE in SCo-1 and STM-1, based on the samples analyzed, have been established to better than ±10% overall uncertainty, with a 95% confidence limit.

Keywords

Analytical Precision Nepheline Syenite Irradiation Standard Radiochemical Neutron Activation Analysis Random Uncertainty 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Akadémiai Kiadó 1974

Authors and Affiliations

  • S. T. Kosiewicz
    • 1
  • P. J. Schomberg
    • 1
  • L. A. Haskin
    • 1
  1. 1.Department of ChemistryUniversity of WisconsinMadison(USA)

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