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在强辐照场中以离子交换法处理放射性核素对树脂的辐照稳定性和动力学性能有更高的要求。在对若干国产阴离子交换树脂进行筛选的基础上,本文着重比较了201×4和2606两种树脂的选择性、辐照—化学稳定性和动力学性能。结果表明,二者的选择性相近,而其它性能2606树脂优于201×4树脂。通过分离、纯化钚的实验工作,表明2606树脂确是一种适于处理放射性核素的阴离子交换树脂。本文给出了上述试验结果,并指出了一些可能的应用方面。
Radionuclides treated by ion exchange in a strong radiation field have higher requirements on the radiation stability and kinetics of the resin. Based on the screening of several domestic anion exchange resins, this paper focuses on the comparison of the selectivity, radiation-chemical stability and kinetics of 201 × 4 and 2606 resins. The results show that the selectivity of the two is similar, while the other properties of 2606 resin is better than 201 × 4 resin. The experimental work of separating and purifying plutonium shows that the 2606 resin is indeed an anion exchange resin suitable for handling radionuclides. This paper gives the above experimental results, and points out some possible application aspects.