摘要
为实现从质子回旋加速器辐照后的Ni靶中提取64 Cu,建立了使用阴离子交换法从Ni靶溶解液中实施64 Cu与基体Ni及伴生Co放化分离的工艺。测定了Ni 2+、Co2+和Cu2+在阴离子交换树脂AG1-X8与盐酸介质之间的静态分配系数Kd。确定了使用阴离子交换树脂柱分离提取64 Cu的工艺:首先用6mol/L盐酸穿透Ni,再用4mol/L盐酸洗脱57 Co,最后用1mol/L盐酸解吸64 Cu。64 Cu放化回收率为87.5%±3.0%。以丰度99.07%的富集64 Ni为靶材,质子轰击后,使用本工艺分离得到的64 Cu放射性核纯度大于99.0%,化学杂质Ni、Co和Fe的浓度均小于0.05mg/L。
To separate 64Cu from cyclotron irradiated 64Ni target, a radiochemical purifica- tion procedure for 64 Cu from Ni and Co via anion exchange was developed. Based on the dis- tribution coefficient data of Cu, Ni and Co between AG1-X8 resin and HC1 medium, separa- tion of 64Cu from Ni and Co using AG1-X8 anion exchange resin column had been studied with different concentrations of HCl as the eluent. The Ni fraction was eluted by 6 mol/L HCl, and Co fraction by 4 mol/L HC1. 64Cu fraction was washed out and collected in 1 mol/ L HC1. Recovery yield of 64 Cu was 87.5 %± 3.0%. The radionuclide purity of 64Cu pro- duced by enriched 64Ni was higher than 99.0% and the concentrations of Ni and Co in the fi- nal 64 CuCl2 solution were both less than 0.05 mg/L.
出处
《同位素》
CAS
2012年第3期144-148,共5页
Journal of Isotopes
基金
国际原子能机构IAEA资助项目(CRP-15899)
