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本文分别以放射性核素~(137)Cs(Ⅰ)、~(60)Co(Ⅱ)、~(51)Cr(Ⅲ)和~(144)Ce(Ⅲ)代表不同价态的裂变产物和反应堆材料腐蚀产物,选用732~#强酸性阳离子交换树脂,测定了Li以及这些核素在不同的硝酸浓度下的分配系数与分离系数。研究了~7Li与上述核素的各种分离条件和影响因素。此外,还研究了用无机离子交换剂(磷酸锆)分离提纯~7Li的各种条件。测定了将洗脱液LiNO_3～HNO_3溶液用电渗析法转化为LiOH的各种影响因素,并确定了分离和转型的最佳条件,得到了放化纯的LiOH。
In this paper, different fission products and reactors of different valences are represented by ~ (137) Cs (Ⅰ), ~ (60) Co (Ⅱ), ~ 51 Cr (Ⅲ) and ~ Material corrosion products, selection of 732 ~ # strong acid cation exchange resin, Li and determination of these nuclides in different concentrations of nitric acid partition coefficient and separation factor. Various separation conditions and influencing factors of ~ 7Li and the above nuclides were studied. In addition, various conditions for the separation and purification of ~7Li with inorganic ion exchangers (zirconium phosphate) have also been investigated. The factors affecting the conversion of LiNO_3 ~ HNO_3 solution into LiOH by electrodialysis were determined. The optimal conditions for the separation and conversion were determined and the pure LiOH was obtained.