He Shuhua, Chen Mumei, Li Zheng, Cong Haixia, Zhang Lan, Li Qinnuan
Center for Excellence in TMSR Energy System, Shanghai Institute of Applied Physics, Chinese Academy of Sciences.
Anal Sci. 2017;33(11):1265-1270. doi: 10.2116/analsci.33.1265.
For the determination of μg-mg L of FPs in 100 g L of thorium matrix with HCl medium, a method, including anion-exchange pre-separation, evaporation and inductively coupled plasma mass spectrometry (ICP-MS) measurement, was developed. The procedure parameters, such as the matrix effect of thorium, the acidity of separation, the elution curve of thorium and FPs and the temperature of evaporation were optimized by batch equilibration, column elution and evaporation experiments. It was found that the average recovery of the FPs was in the range 80 - 110%, and the RSD values were in the range 2 - 15% utilizing prior anion exchange separation of FPs from thorium samples. Furthermore, the detection limit of the method was also investigated.
为了在含100 g/L钍基体的HCl介质中测定μg - mg/L的裂变产物，开发了一种包括阴离子交换预分离、蒸发和电感耦合等离子体质谱（ICP-MS）测量的方法。通过批次平衡、柱洗脱和蒸发实验，优化了诸如钍的基体效应、分离酸度、钍和裂变产物的洗脱曲线以及蒸发温度等程序参数。结果发现，利用先将裂变产物从钍样品中进行阴离子交换分离的方法，裂变产物的平均回收率在80% - 110%范围内，相对标准偏差（RSD）值在2% - 15%范围内。此外，还研究了该方法的检测限。
