【摘要】 <正> 稀土元素的分离、分析,在地球化学、宇宙化学、环境化学等学科中起着极为重要的作用。近年来,国内外利用高分辨率γ谱仪中子活化分析法测定岩石中稀土元素的报道很多,虽然对放射化学分析流程都在不同程度上有所改进,但对超基性岩石中大量存在的²⁴Na、⁴⁶Sc、⁵⁹Fe和⁵¹Cr等核素的去除,解决被测元素γ谱之间相互干扰（包括重峰干扰和康普顿本底干扰）更多还原

【Abstract】 A method for removing Na and Sc from activated rocks is described in the determination of REE by neutron activation analysis. Absorbing experiments were carried out on improved HAP, using 24Na, 46Sc, 59Fe, 141Ce and 155Eu as indicators. Almost 100% 24Na and more than 95 % 46Sc were removed in an improved HAP column.Finally, the determination of REE in OPH 163 rocks by the combinatory neutron activation analysis using present method has been carried out. Experimental data indicated that more than three elements (Pr, Nd and Ho) have been determined by this method as compared with non-destructive neutron activation anlysis and the proposed method was sensitive and feasible.更多还原