An Internal-Reference Method for the Determination of Rubidium by Photon-Activation Analysis with Strontium Used as the Reference Element

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概要

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• We have studied a method for the determination of rubidium by activation analysis with brems-strahlung photons, with strontium used as the internal-reference element. This method is based on the γ-ray spectrometric measurement of the <SUP>84</SUP>Rb activities produced by the <SUP>85</SUP>Rb(γ,n) reaction and on the comparisons of those activities with that of <SUP>83</SUP>Rb arising from strontium as a result of the (γ,p) reaction. The yields of various photonuclear reactions in rubidium and in strontium have also been examined as a function of bremsstrahlung maximum energies up to 60 MeV, and the best conditions for the determination of rubidium are proposed. When the maximum energy was set at 18 to 20 MeV, no interfering reactions occurred; a rubidium content down to about 2 μg can be determined accurately. A comparison of solid-state and scintillation γ-ray spectrometry in this method has also been included with respect to the sensitivity and the selectivity.

• 公益社団法人 日本化学会の論文

著者

• Oka Yoshinaga

  Department of Chemistry, Faculty of Science, Tohoku University

• Tsai Hui-Tuh

  Department of Chemistry, Faculty of Science, Tohoku University

• Kato Toyoaki

  Department of Chemistry, Faculty of Science, Tohoku University

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