同位素稀释质谱法测定U_3O_8中痕量Dy

THE DETERMINATION OF TRACE Dy IN U_3O_8 BY ISOTOPE DILUTION MASS SPECTROMETRY

摘要: 试样用HCl溶解,以201×7型阴离子交换树脂除去大量U,用P_(507)萃淋树脂将Dy与其他稀土元素分离。以~(160)Dy作稀释剂,质谱测定~(160)Dy与~(162)Dy之丰度比。该法分析Dy相对含量8.47×10~8的U_3O_8试样时方法精密度为4.1％。本法还与其他分析方法进行了比对分析,获得满意的结果。
- 质谱 /
- 同位素稀释 /
- Dy /
- U_3O_8 /
- P_(507)萃淋树脂
Abstract: A method of determination of trace Dy in U3O8 by isotope dilution mass spectrometry (IDMS) is described. The quantity of sample is Ig U3O8, 160Dy is used as spike. The great quantity U and trace elements Fe and Pb are removed by model 201×7 anion ion-exchange resin. Dy is separated from other rare earth elements by P507 extractant-containing resin. The ratio of 160Dy/162Dy is measured by mass spectrometer and the quantity of Dy is calculated. The precision of method is 4. 1% as sample contains 8. 47×10-8Dy.

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