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本文用改进的Schuman法对稀土离子在王冠化合物为载体的液膜中的迁移规律进行了研究。测定了阴离子、溶剂、王冠化合物浓度、液膜厚度和温度等因素对La~(3+)、Sm~(3+)、Er~(3+)离子在DB—18—6及B—15—C—5为载体的液膜中迁移速度的影响。结果表明阴离子性质是稀土离子在王冠载体液膜中迁移速度的主要影响因素,而在上述两种冠醚作为载体时,Er~(3+)离子的迁移速度要比La~(3+)及Sm~(3+)离子的小。
In this paper, the modified Schuman method was used to study the migration rule of rare earth ions in the film of the crown compound carrier. The effects of anion, solvent, crown compound concentration, liquid film thickness and temperature on the photocatalytic activity of La ~ (3 +), Sm ~ (3 +) and Er ~ (3+) ions in DB- C-5 carrier liquid film migration speed. The results showed that the anion was the main influencing factor of the migration speed of rare earth ions in the liquid film of the crown carrier. However, the migration speed of Er 3+ ions was higher than that of La 3+ and Small Sm ~ (3+) ions.