機器中性子放射化分析による高純度鉄標準物質中の微量元素の定量

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  • Determination of Trace Elements in High Purity Iron as a Certified Standard Material by Instrumental Neutron Activation Analysis
  • キキ チュウセイシ ホウシャカ ブンセキ ニ ヨル コウジュンドテツ ヒョウジュン ブッシツ チュウ ノ ビリョウ ゲンソ ノ テイリョウ

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Trace elements in high purity iron certified reference materials, JSS001-4 and JSS003-4, prepared by the Iron and Steel Institute of Japan were determined by instrumental neutron activation analysis (INAA).<BR>Five or seven aliquots of each sample (ca. 130750 mg) were irradiated for a short time (2 min) at a thermal neutron flux of 1.5×1012n cm-2 s-1 (pneumatic transfer) and for a long time (6 h) at a thermal neutron flux of 3.7×1012 n cm-2 s-1 (cental thimble) in the Rikkyo University Research Reactor. The irradiated samples were measured by conventional γ-ray spectrometry using a coaxial Ge detector, and by anticoincidence γ-ray spectrometry with a coaxial Ge detector and a well-type Nal(Tl) detector.<BR>The concentrations of 7 elements (Na, Cl, V, Co, Zn, As, W) in the JSS001-4 and 1 1 elements (Na, Al, V. Mn, Co, Ni, Cu, As, Mo, Sb, W) in the JSS003-4 were determined by these methods. The determined values were in good agreement with the certified and reference values. The lower limit of determination values for Sm, Ir, Au in the J55003-4 were 0.11 ng/g.

収録刊行物

  • 鉄と鋼

    鉄と鋼 85 (2), 91-96, 1999

    一般社団法人 日本鉄鋼協会

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