【摘要】 <正> 有关铀中稀土的测定,在文献中已有较详细的报导。随着ICP光源的出现,为痕量稀土的测定提供了新的灵敏手段,而水平式ICP-AES法较竖直式ICP-AES法具有更强的检测能力。检测限可好5—10倍或10倍以上。本文在前一工作基础上,采用水平式ICP作激发光源,使检测下限有了显著改善。取样1g时,测定下限可达0.4—2ppb。此法较之中子活化法或火花源质谱法更为简便,易于普及,可用于测定UF₆或其它铀化合物中痕量Gd、Sm、Dy、Eu,并可同时测定其它稀土。更多还原

【Abstract】 Gd, Sm, Dy and Eu in UF₆ or other uranium compounds are determined byhorizontal ICP-AES method.The proposed method can be used for determining0. 4-20ppb Dy, Eu, and 2-100ppb Gd, Sm with 1 gram sample. The percentagerecovery is 90-120％,and the relative standard deviation is less than 11％.Otherrare earth elements has also been determined.更多还原