同位素 ›› 2014, Vol. 27 ›› Issue (4): 203-208.DOI: 10.7538/tws.2014.27.04.0203

• 核技术工业应用专栏 • 上一篇    下一篇

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

李锦富;阳国桂;罗联哲;高媛   

  1. 原子高科股份有限公司,北京102413
  • 出版日期:2014-11-20 发布日期:2014-12-22

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

LI Jin-fu;YANG Guo-gui;LUO Lian-zhe;GAO Yuan   

  1. Atom High Tech Co. LTD., Beijing 102413, China
  • Online:2014-11-20 Published:2014-12-22

摘要:

利用137Cs-137mBa的放射性级联衰变关系和137Cs、137mBa之间不同的化学性质,可以制备137Cs-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0.311 mmol/g,吸附平衡常数为2.2×104。用上述材料制备了活度为1.85×109Bq(50 mCi)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。

关键词: 亚铁氰化钴钾, 137Cs, 137mBa, 同位素发生器

Abstract:

The mother-daughter relation and the different chemical properties between 137Cs and 137mBa makes it possible to prepare 137Cs-137mBa generator to obtain 137mBa 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 breakthrough of cesium was 10-7 per milliliter of eluent. The service life was more than 1 year.

Key words: potassium cobalt hexacyanoferrate, Cesium-137, Barium-137m, radioisotope generator