放射化分析による精製大豆油中の微量元素の定量 (第2報) : 銅および亜鉛の定量

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Authors investigated the determination of copper and zinc in refined soybean oils by neutron activation analysisfollowed by radiochemical purification of the resulting radioactive copper and zinc. After neutron irradiation of the oils in aTRIGA-II small reactor, copper and zinc were chemically separated Cu-salicylaldoxime precipitation method and Zn quinaldate precipitation method. The sensitivity limit of detection of this method is ×10-9 gram for copper and 10-8 gram for zinc when sample weghing 1 to 3 grams is irradiated for maximum 30 hoursin a thermal neutron flux about1011n/cm2/sec.