阴离子交换法在分离纯化~(99)Mo中的应用

Application of Anion Exchange Method in the Purification of~(99)Mo

摘要: 不同温度下,测定了99Mo在NH4OH,NaOH,HNO3体系中的分配系数,研究了温度、NH4OH浓度对99Mo分配系数的影响;测定了99Mo在硝酸和NaOH NaNO3体系中的解吸率。实验结果表明,99Mo在NH4OH体系中吸附和用去离子水洗脱时,没有穿透交换柱;用200mL3mol/LHNO3解吸时,解吸率可以达到90 6%;用200mL0.5mol/L 0.5mol/L的NaOH NaNO3混合溶液解吸时,解吸效率可以达到99 8%以上。

Abstract: The distribution coefficient of~(99)Mo is determinated in NH_4OH, NaOH, HNO_3 solution at different temperature. The effect of temperature and alkali concentration is studied. The amount of~(99)Mo eluted by NaOH and HNO_3 elution is determinated. The results show that~(99)Mo does not breakthrough the column as the loading solution passes through the 717 column; and more than 90.6% of~(99)Mo can be eluted by 200 mL 3 mol/L HNO_3, and 99.8% by 0.5 mol/L NaOH-0.5 mol/L NaNO_3 (elution.)