X-ray spectrographic determination of iridium in LiH or LiD /
by James M. Hansel, E. A. Hakkila.

Description

Main Author

Hansel, James M.

Related Names

Hakkila, E. Arnold, 1931-, author.
Los Alamos Scientific Laboratory.
U.S. Atomic Energy Commission.

Language(s)

English

Published

Los Alamos, New Mexico : Los Alamos Scientific Laboratory of the University of California, 1974.

Subjects

Nitric acid.
Lithium compounds > Lithium compounds / Analysis.
Hydrochloric acid.
Lutetium.
Analytical chemistry > Analytical chemistry / Quantitative.
Thulium.
Platinum.
X-ray spectroscopy.
Iridium.
Lithium hydride > Lithium hydride / Analysis.

Summary

Iridium is determined in LiH or LiD using a fusion-x-ray fluorescence technique. Samples are fused at 870©�K, the residue is dissolved in HCl, and the solutions are fumed with HNO₃ to remove chloride. Platinum is added as an internal standard, and the intensities of the L[alpha]₁ x rays of iridium and platinum are measured. The Ir/Pt x-ray intensity ratio is compared to ratios measured for reference materials having known compositions which have been prepared in the same manner as the samples. The relative standard deviation for measuring 1 to 10 mg of iridium is between 2 and 0.4%. Thulium and lutetium interfere when present in amounts greater than approximately 1%.

Note

"United States Atomic Energy Commission Contract W-7405-Eng. 36"--Cover.
"UC-4; Reporting Date: Feb. 1974; Issued: May 1974"--Cover.

Physical Description

7 pages ; 28 cm.

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