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Applied Spectroscopy

Applied Spectroscopy

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  • Vol. 22, Iss. 5 — Sep. 1, 1968
  • pp: 426–430

X-Ray Fluorescence Analysis of Individual Rare Earths in Complex Minerals

Harry J. Rose and Frank Cuttitta

Applied Spectroscopy, Vol. 22, Issue 5, pp. 426-430 (1968)


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Abstract

A combined chemical x-ray fluorescence method is described for determining rare-earth elements in small amounts of complex rare-earth minerals. These elements yield a complex x-ray spectrum in which many of the analytical emission Lα lines of a given element coincide with the Lβ and/or Lγ lines of a lighter rare-earth element several atomic numbers removed. The proposed analytical scheme corrects for these interferences. Sixteen elements consisting of the lanthanides, yttrium, and scandium can be determined on as little as a 1-mg portion of the separated oxides. The oxides are dissolved in 1 ml of dilute acid, absorbed onto cellulose powder and pressed into a pellet for x-ray excitation. Chemically analyzed geologic standards are not required for calibration.

Citation
Harry J. Rose and Frank Cuttitta, "X-Ray Fluorescence Analysis of Individual Rare Earths in Complex Minerals," Appl. Spectrosc. 22, 426-430 (1968)
http://www.opticsinfobase.org/as/abstract.cfm?URI=as-22-5-426

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