機器中性子放射化分析法による茶葉環境標準試料中の微量元素の定量
1986 年 35 巻 12 号 p. 993-995
詳細
1986 年 35 巻 12 号 p. 993-995
Thirty three elements in an environmental reference material Tea Leaves (NIES No.7) prepared by National Institute for Environmental Studies were determined by instrumental NAA. The Tea Leaves samples(ca. 401000mg) were irradiated by thermal neutron and epithermal neutron in Musashi Institute of Technology Research Reactor (MITRR). The cadmium cover of 1 mm thick was used for epithermal neutron irradiation. The gamma-ray measurements of irradiated samples were preformed using a coaxial Ge(Li) detector and 4096 channel pulse height analyzer. Thirty elements (Na, mg, Al, Cl, K, Ca, Sc, V, Cr, Mn, Fe, Co, Ni, Zn, Br, Rb, Sr, Sb, Hg, Cs, Ba, La, Ce, Sm, Eu, Tb, Yb, Hf, Ta and Th) were determined by measuring thermal neutron irradiated samples. While remaining 3 elements (As, Se and W) were determind by measuring epithermal neutron irradiated samples.
