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Neutron activation analysis for osmium and ruthenium in platinum

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Abstract

A sensitive procedure for the simultaneous determination of trace levels of osmium and ruthenium in platinum, by thermal neutron activation analysis utilizing γ-ray spectrometry, was developed. The radiochemical separation method utilized perchloric acid for a selective oxidation of osmium and ruthenium to the volatile tetroxides. The distillation of the tetroxides greatly reduced the radiation hazard presented by the bulk of the activities in the matrix. Activities of 15-day191Os and 40-day104Ru were measured by accumulation of pulses from a 3″ diameter NaI(Tl) crystal detector. Analyses of γ-ray spectra were achieved using digital computer techniques. The procedure provided analyses for a high purity platinum stock of 0.032±0.007 ppm Os and 0.044±0.005 ppm Ru.

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Author notes

  1. G. J. Payton

    Present address: Chemistry Department, William Woods College, 65251, Fulton, Missouri

Authors and Affiliations

  1. Institute for Atomic Research and Department of Chemistry, Iowa State University, Ames, Iowa, (USA)

    G. J. Payton & D. S. Martin Jr.

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  1. G. J. Payton
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  2. D. S. Martin Jr.
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Additional information

Work was performed at the Ames Laboratory of the U. S. Atomic Energy Commission, Contribution No. 3073.

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Payton, G.J., Martin, D.S. Neutron activation analysis for osmium and ruthenium in platinum. J. Radioanal. Chem. 10, 235–243 (1972). https://doi.org/10.1007/BF02530251

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