Advertisement

Analytical Applications of X-ray Excited Optical Luminescence

  • E. L. DeKalb
  • A. P. D’Silva
  • V. A. Fassel
Conference paper

Abstract

During the past several years, X-ray excited optical luminescences spectroscopy has been found useful in analytical chemistry, particularly for the detection and determination of rare earth impurities in inorganic materials at concentrations in the 1 part in 106 to 109 range. A recent study has shown that one or more of the rare earth elements can be easily detected at the 100 ppm level in compounds of 55 of the chemical elements, when these compounds are incorporated into appropriate phosphors. The advantages of X-ray excitation over other excitation procedures are discussed, and the concept of internal standardization is explained. Analytical procedures for the determination of rare earths in other rare earths, in Zr, Th, U, and the Fe group of transition elements will be briefly described. None of these analytical methods requires prior separation or concentration steps, and the phosphor preparation is simple and rapid.

Keywords

Rare Earth Neutron Capture Cross Section Rare Earth Impurity Total Impurity Content Phosphor Preparation 
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.
    E. L. DeKalb, V. A. Fassel, T. Taniguchi and T. R. Saranathan, Anal. Chem. 40, 2082 (1968).CrossRefGoogle Scholar
  2. 2.
    E. L. DeKalb, A. P. D’Silva and V. A. Fassel, Anal. Chem. 42, 1246 (1970).CrossRefGoogle Scholar
  3. 3.
    A. P. D’Silva, E. L. DeKalb and V. A. Fassel, Anal. Chem. 42,1846 (1970).CrossRefGoogle Scholar
  4. 4.
    R. J. Conzemius, Ames Laboratory, personal communication.Google Scholar
  5. 5.
    T. R. Saranathan, V. A. Fassel, and E. L. DeKalb, Anal. Chem. 42, 325 (1970).CrossRefGoogle Scholar
  6. 6.
    A. P. D’Silva and V. A. Fassel, Anal. Chem. 43, 1406 (1971).CrossRefGoogle Scholar

Copyright information

© Plenum Press, New York 1973

Authors and Affiliations

  • E. L. DeKalb
    • 1
  • A. P. D’Silva
    • 1
  • V. A. Fassel
    • 1
  1. 1.Ames Laboratory USAECIowa State UniversityAmesUSA

Personalised recommendations