论文部分内容阅读
1.拟定了制备磷锑酸离子交换剂的方法。此交换剂是由普通试剂——磷酸和五氯化锑合成。它是无色透明的玻璃状物质,它比其它合成无机离子交换材料便宜得多。2.测定了碱金属离子在磷锑酸交换剂上的分配系数。其分配系数随碱金属的原子量的增加而增加。实验表明,此交换剂对碱金属离子的亲和力的次序与有机离子交换树脂和其它无机交换材料很类似。碱金属离子的分配系数随溶液中盐酸浓度的增大而降低,但两相邻元素的分离因数却有不同的变化:在0.2NHCl中,其分离因数与中性条件下的比较起来,α_(N_α)~K稍有降低,而α_K~(R_b)、α_(R_b)~(C_s)却有明显的提高。3.在0.2NHCi中,使用直径为0.6cm,高15.5cm的交换柱,0.17毫升/分的流速和0.25N NH_4NO_3-0.2NHCl、3.78N NH_4NO_3作为铷和铯的洗脱剂,成功地分离了各为2毫克的铷和铯。
1. The preparation of the phosphoric acid antimony ion exchanger method. This exchanger is synthesized from the common reagent phosphoric acid and antimony pentachloride. It is a colorless and transparent glassy material, which is much cheaper than other synthetic inorganic ion exchange materials. Determination of the partition coefficient of alkali metal ions on the antimony phosphate exchangers. The partition coefficient increases with the atomic weight of alkali metals. Experiments have shown that the order of affinity of this exchanger for alkali metal ions is very similar to that of organic ion exchange resins and other inorganic exchange materials. The partition coefficient of alkali metal ions decreases with the concentration of hydrochloric acid in the solution, but the separation factors of two adjacent elements have different changes: in 0.2NHCl, the separation factor compared with the neutral conditions, α_ ( N_α) ~ K decreased slightly, but α_K ~ (R_b) and α_ (R_b) ~ (C_s) increased obviously. 3. In 0.2N HCi, an exchange column with a diameter of 0.6 cm and a height of 15.5 cm, a flow rate of 0.17 ml / min and 0.25 N NH 4 NO 3 -0.2NHCl and 3.78 N NH 4 NO 3 as eluents of rubidium and cesium were successfully separated 2 mg each of rubidium and cesium.