聚锑酸用于^(90)Y发生器制备的可行性研究

Feasibility Study on Application of Polyantimonic Acid in ^(90)Y Generator Preparation

聚锑酸(PAA)在0.1 mol/L硝酸溶液中对Sr和Y的吸附容量分别为16.25 mg/g和42.1μg/g。不同浓度硝酸溶液不能将Sr和Y分离,二乙基三胺五乙酸(DTPA)和乙二胺四乙酸(EDTA)溶液可以洗脱Y而不能洗脱Sr。采用0.02 mol/L的EDTA为洗脱剂,Y的回收率能达到72%,但造成PAA交换剂不稳定。80℃下20 mL 0.12 mol/L的DTPA溶液可以洗脱86.2%的Y。研究结果表明,PAA有望制备成90Y发生器,但是发生器体系必须进行合理的设计以满足90Y发生器的要求。

The adsorption capacity for Sr and Y with Polyantimonic Acid （PAA） in 0. lmol/L nitric acid solution was 16.25 mg/mL and 42.1 μg/g respectively. Sr and Y can＇t be separated with nitric acid solution of different concentration. More than 72% of Y can be eluted with 100 mL 0.02 mol/L EDTA as elution, but PAA was unstable in EDTA solution. 86.2% of Y can be desorbed with 20 mL 0.12mol/L DTPA at the temperature is 80℃ . The results indicated that PAA may be used for 90y generator preparation, but system of generator should be rational designed to meet requires of 90y generator.