混合放射性核素参考溶液的研制

DEVELOPMENT OF MIXED RADIONUCLIDE REFERENCE SOLUTION

将10 3 Ru标准溶液中的10 3 RuCl3 转化为Na2 [10 3 RuNO(NO2 ) 4 OH],并通过选择适宜的化学组成和酸度 ,建立了制备10 3 Ru ,13 1I,13 7Cs ,13 4 Cs和40 K等混合放射性核素参考溶液的方法。经实验检验和放射性比对测量 ,结果表明 ,采用该方法制得的混合放射性核素参考溶液是均匀、稳定的 。

This work proposes the method for preparing 103 Ru, 131 I, 137 Cs, 134 Cs and 40 K mixed radionucllide reference solution by transforming the 103 RuCl 3 existed in general 103 Ru standard solution into Na 2[RuNO(NO 2) 4OH], and selecting feasible chemical composition and pH value. The experimental results and radioactivity comparison measurements show that the mixed radionuclide reference solution prepared using the method mentioned ahead is uniform, stable and meets the requirements of the standards radioactivity metrology.