中文摘要：

通过对地质样品中Mo同位素测试前的处理方法的比较，对传统的阴、阳离子树脂交换法进行了改进研究。经改进后的方法实用范围较宽，Mo的回收率达到97．49％±0．27％，Mo同位素质谱分析过程中可能的同重干扰元素Zr、Fe、Mn等的去除效果理想，其它金属元素的去除效果也较理想，且在阴离子交换柱洗脱Mo的过程中总计约需的提取液（盐酸和硝酸）体积只有75mL，只需文献报道用量的45％，从而减少了试剂对样品，特别是对低含量地质样品可能带来的潜在污染。

英文摘要：

By comparing the methods of separation and purification betore Mo isotope ,at geological samples, we modified the traditional anion/cation exchange resin two-column procedure. After being modified, the operating range was rather wide, the recovery of Mo was 97.49%±0.27% , the potential interferences on Mo isotopes （including Zr, Fe, Mn and other interfering matrix elements） were reduced to the negligible levels relative to Mo, and the volume of Mo elution solution passing through the anion exchange resin column was only 75 mL, which was only 45% of the volume reported by other literatures, and this will reduce potential contamination to Mo isotope geological samples from chemical reagents, especially for the low concentration Mo isotope geological samples.