Advertisement

Comparison of Optical Fluorescence, Electron Microprobe, and Neutron Activation Methods for Chromium Analysis in Ruby

  • Herbert G. Lipson
  • James R. Buckmelter
  • John J. Fitzgerald
Part of the Developments in Applied Spectroscopy book series (DAIS, volume 9)

Abstract

The results of optical, electron microprobe and neutron activation analysis methods for chromium determination in ruby are compared. Relative chromium concentrations down to the ppm range are determined optically in small sample volumes from intensities of R-line fluorescence excited with the 4880 X line of a cw argon gas laser. In conjunction with standards, concentrations dose to the sample surface are obtained from electron microprobe measurements while bulk concentrations are determined from neutron activation analysis. In addition, local inhomogeneities are revealed by both optical and electron microprobe techniques. Advantages and limitations for each method with respect to standards, sensitivity, sampling and interference of other impurities are discussed.

Keywords

Neutron Activation Neutron Activation Analysis Electron Microprobe Chromium Concentration Neutron Activation Method 
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.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    T. C. Damen, S. P. S. Portaand F. Varsanyi, Bull. Am. Phy. Soc., 12, 273 (1967)Google Scholar
  2. 2.
    D. M. Dodd, D. L. Wood and R. L. Barns, J. Appl. Phys., 35, 1183 (1964 )CrossRefGoogle Scholar
  3. 3.
    D. C. Cronemeyer, J. Opt. Soc. Am., 56, 1703 (1966)CrossRefGoogle Scholar
  4. 4.
    D. F. Nelsonand M. D. Sturge, Phys. Rev., 137, A1117 (1965)Google Scholar
  5. 5.
    K. F. J. Heinrich, “Advances in X-ray Analysis”, Proceedings of the 16th Annual Conference on Applications of X-ray Analysis, Aug 9–11, 1967, 5a.eds. J. B. Newkirk and G. R. Mallet, 4O-55, Plenum Press, New York (1968)Google Scholar
  6. 6.
    J. W. Colby, “Advances in X-ray Analysis”, 11, Proceedings of the 16th Annual Conference on Applications of X-ray Analysis, Aug. 9–11, 1967, J. B. Newkirk and G. R. Mallet, 287–305, Plenum Press, New York (1968)Google Scholar
  7. 7.
    T. 0. Ziebold, Analytical Chemistry, 39, 85B (1967)Google Scholar
  8. 8.
    J. R. Weiner, J. J. O’Connor and B. Rubin, J. Electrochem. Soc., 110 #11, (Nov. 1963)CrossRefGoogle Scholar
  9. 9.
    G. Friedlander and J. W. Kennedy, “Nuclear and Radiochemistry” second edition, pg 172, J. Wiley & Son, New York, New York (1964)Google Scholar

Copyright information

© Chicago Section of the Society for Applied Spectroscopy 1971

Authors and Affiliations

  • Herbert G. Lipson
    • 1
  • James R. Buckmelter
    • 1
  • John J. Fitzgerald
    • 1
  1. 1.Air Force Cambridge Research LaboratoriesBedfordUSA

Personalised recommendations