阳离子交换分离-水平式ICP-AES法测定Zr-Nb合金中微量Gd,Sm,Dy,Eu

THE DETERMINATION OF TRACE Gd, Sm, Dy, and Eu IN Zr-Nb ALLOY BY CATION ION-EXCHANGE SEPARATION-HORIZONTAL ICP-AES METHOD

摘要: <正> 核工程要求Zr-Nb合金中Gd,Sin,Dy,Eu量不大于0.1ppm。 Zr-Nb合金中RE杂质的分析,未见报道。但有人用阳离子交换-PMBP萃取二次分离后光谱测定Zr-4合金中RE;还有人用铜铁试剂沉淀,PMBP萃取、D_2EHPA反相

Abstract: In this method, the Zr--Nb alloy sample is disolved in HF and converted intosulfates with H_2SO_4. Then the RE are separated from Zr and the other elementswith cation ion--exchange resin, and then determined by horizontal ICP--AES. Thismethod can determine 0.04ppm Gd, Sm and 0.008ppm Dy, Eu and with 1 gramsample the relative standard deviation is less than ± 15%. The percentage recoveryis 90--115%. This method is also simple and rapid.