球形亚铁氰化钴钾-硅胶无机离子交换剂的制备及其用于^(137)Cs-^(137m)Ba发生器的研究  

Preparation of Spherical Potassium Cobalt Hexacyanofe Rate(Ⅱ)Inorganic Ion-exchanger Supported on Silica Gel for ^(137)Cs-^(137m)Ba Radioisotope Generator

作　　者：李锦富 阳国桂 罗联哲 高媛 

机构地区：[1]原子高科股份有限公司,北京102413

出　　处：《同位素》2014年第4期203-208,共6页Journal of Isotopes

摘　　要：利用137 Cs-137mBa的放射性级联衰变关系和137 Cs、137mBa之间不同的化学性质,可以制备137 Cs-137mBa核素发生器。本研究制备了球形亚铁氰化钴钾-硅胶无机离子吸附材料,其对Cs+的静态吸附容量为0.311mmol/g,吸附平衡常数为2.2×104。用上述材料制备了活度为1.85×109 Bq(50mCi)的用于工业示踪的137mBa同位素发生器,淋洗效率大于50%,Cs+的漏穿率为10-7/mL量级,使用寿命大于1年。该发生器性能稳定,使用寿命长。The mother‐daughter relation and the different chemical properties between 137 Cs and 137m Ba makes it possible to prepare 137 Cs‐137m Ba generator to obtain 137m Ba nuclides .The potassium cobalt hexacyanoferrate（Ⅱ） inorganic ion‐exchanger supported on silica gel was prepared ,its Cs＋ static adsorption capacity was 0.311 mmol/g ,and its adsorption equilibrium constant was 2.2 ×104 .The 1.85×109 Bq （50 mCi） miniature generator was prepared , The elution efficiency was greater than 50% . The break‐through of cesium w as 10-7 per milliliter of eluent . T he service life w as more than 1 year .

关 键 词：亚铁氰化钴钾 137Cs-137mBa 同位素发生器 

分 类 号：TL99[核科学技术—核技术及应用]