Zhao C, Chen Y, Liu J
Shanghai Institute of Measurement and Testing Technology, 1500 Zhang-Heng Road, Shanghai 201203, China.
Rev Sci Instrum. 2022 Apr 1;93(4):043307. doi: 10.1063/5.0086793.
This study aims to develop a high-efficiency gaseous elemental radioactive iodine generator. To observe the yield of the generator over time, a real-time measurement module was assembled with NaI(Tl) gamma detectors. The Taguchi method was employed to optimize the process parameters and improve the performance of the generator. According to the experimental results, the optimum process parameters were 3.6 l/min for the flow rate of the carrier gas, 0.2 mol/l for the concentration of the NaI reactant solution, and 70 °C for the water bath temperature. The most influential factor was the concentration of the NaI reactant solution. With these optimized process parameters, the yield of the generator was 83% ± 1% (k = 1) in 5 min and reached a plateau (93% ± 1%) in 20 ± 2 min (k = 1).
本研究旨在开发一种高效气态元素放射性碘发生器。为了观察发生器随时间的产率，用碘化钠（铊）γ探测器组装了一个实时测量模块。采用田口方法优化工艺参数并提高发生器的性能。根据实验结果，最佳工艺参数为载气流量3.6升/分钟、碘化钠反应物溶液浓度0.2摩尔/升、水浴温度70°C。最具影响力的因素是碘化钠反应物溶液的浓度。采用这些优化的工艺参数，发生器在5分钟内的产率为83%±1%（k = 1），并在20±2分钟内达到平稳状态（93%±1%）（k = 1）。
