機器中性子放射化分析法による認証鉄鋼標準物質中の微量元素の定量(<特集>分析技術と方法論の最近の進歩)

概要

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Trace elements in certified iron and steel reference standard materials of NIST, SRM1763 and SRM1765 were determined by an instrumental neutron activation analysis (INAA). Three aliquot samples of each certified standard reference material (ca. 85-210mg) were irradiated for 6h at thermal power of 100kW (thermal neutron flux of 4.3×10^<14>nm^<-2>s^<-1>) and at thermal power 3.5MW (thermal neutron flux of 5.3×10^<17>n cm^<-2> s^<-1>) in JRR-4 (Japan Atomic energy Agency). The irradiated samples were measured by γ-ray spectrometry using a coaxial Ge detector. The concentration of 11 elements (Al, Ti, V, Cr, Mn, Co, Ni, Cu, As, Mo, Sb) in the SRM1763 and 9 elements in the SRM1765 were determined by INAA. The determined values were in good or nearly good agreement with the certified values and reference value.
社団法人日本鉄鋼協会の論文
2007-02-01