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将磷钼酸銨固着于滤紙上作为交换剂,以硝酸銨和硝酸的乙醇水溶液为展开剂进行下行展开,鋰、鈉、鉀、铷、銫可以一次分离。斑点頗为集中。实驗时室温为25℃,展开时间为六小时。展开剂浓度在硝酸铵为0.6M,硝酸浓度为0.1M,乙醇与水的比例在1:1到5:1之间时,分离均完全。例如乙醇:水=2:1时的比移值分别为Li,0.84;Na,0.75;K,0.53;Rb,0.14;Cs,0.00。
The ammonium phosphomolybdate immobilized on the filter paper as an exchange agent to ammonium nitrate and nitric acid aqueous solution of ethanol as a developing agent for the downlink expansion, lithium, sodium, potassium, rubidium, cesium can be a separation. Spot is quite concentrated. Laboratory temperature was 25 ℃, the start time was six hours. Expansion agent concentration of 0.6M ammonium nitrate, nitric acid concentration of 0.1M, ethanol and water ratio between 1: 1 to 5: 1, the separation was complete. For example, when the ratio of ethanol to water is 2: 1, the specific gravity shifts are Li, 0.84, Na, 0.75, K, 0.53, Rb, 0.14, Cs, 0.00.