【摘要】 放射性标准溶液属标准物质类,它是一种重要的标准器具,可用于量值和比对工作中。文中介绍了按制备放射性标准溶液的要求研制的⁶⁰Co,⁹⁰Sr-⁹⁰Y,¹³⁷Cs,¹³⁴Cs,⁶³Ni,²⁴¹Am,¹²⁵Ⅰ,¹³¹Ⅰ等8个核素的标准溶液。选择溶液的介质条件为20～50μg稳定载体/g溶液,酸度为0.1 mol/L的盐酸。碘的放射性溶液调成碱性并加入适当量的稳定剂。溶液经过长期的考察是均匀和稳定的,量值准确可靠。给出的上述核素标准溶液不确定度分别为:0.10％,0.27％,0.18％,0.12％,0.24％,0.18％,0.20％,0.22％（1σ）。更多还原

【Abstract】 Radioactive standard solution is a standard reference material. It is an important standard measuring instrument and used for transferring and intercom-paring of quantity value. According to requirement for the preparation of radioactive standard solution,60Co,90Sr-90Y,137Cs,134Cs,63Ni,241Am,125I,131I standard solutions have been developed. The medium includes about 20~50ug stable carrier per gram solution and 0. 1 mol/L HC1. For iodine radioactive solutions , the medium is alkaline and the stabilizer is added into it. The solutions are all stable and uniform in the long term. The specific activities are accurate and the uncertainties are 0.10%, 0.27%, 0.18%, 0.12%, 0.24%, 0.18%, 0. 20%, 0. 22% respectively (1).更多还原