放射活性化分析による高純度金属ケイ素中の銅，ガリウム及びアンチモンの定量

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タイトル別名
  • Determination of Copper, Gallium and Antimony in Pure Metallic Silicon by Radioactivation Method (Studies on Analytical Methods for Trace Elements in Metals Using Radioactive Isotopes, 7th Report)
  • ホウシャ カッセイカ ブンセキ ニ ヨル コウジュンド キンゾク ケイソ チュウ ノ ドウ , ガリウム オヨビ アンチモン ノ テイリョウ

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抄録

The trace amounts of copper, gallium and antimony in pure metallic silicon were determined by radioactivation method by the β-radioactivity from their precipitates. The sample was irradiated with neutron flux of 10″ n/cm2/sec, and silicon was removed from the other elements by treating with a mixture of nitric acid and hydrofluoric acid. From the residue after removal of silicon, antimony was separated with the acid of manganese dioxide collector followed by organic coprecipitation method. From the filtrate from the collected manganese gallium was extracted with ether. Finally, copper was precipitated from the solution after the extraction of gallium in the same manner as antimony. Using the above mentioned method, in two samples of metallic silicon, respectively 0.016 and 0.020 ppm of copper, 0.004 and 0.012 ppm of gallium, and 0.203 and 0.230 ppm of antimony could be determined.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 23 (11), 621-624, 1959

    公益社団法人 日本金属学会

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