| 穴醚[2, 2, 2]和穴醚[2, 2]对镉离子萃取行为的研究 |
| EXTRACTION OF CADMIUM ION WITH CRYPTAND [ 2, 2, 2 ] AND CRYPTAND [2, 2] |
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| 摘要: 本文研究了穴醚[2,2,2]和穴醚[2,2]在硝基甲烷中对镉的萃取行为.探讨了溶剂、穴醚浓度,碱浓度,无机酸浓度,盐效应及共存离子对镉萃取的影响.实验结果表明,硝基甲烷ε=35.6,μ=3.4德拜宜作为穴醚的溶剂.当穴醚[2,2,2]——硝基甲烷的浓度为2×10-3M,Me4NOH浓度为4×10-2M时对镉的萃取最为有利.无机酸的引入使穴醚质子化程度加大,盐效应对镉的萃取无明显影响.十八种共存离子对镉萃取无干扰,因而选择性高.实验结果为用穴醚[2,2,2]萃取镉提供了依据. |
| 关键词: 穴醚 镉 萃取 |
| 基金项目: |
| Abstract: The solvent extraction of cadmium ion with cryptand [2,2,2] and cryp-tand [2,2] was studied.The extraction of cadmiun ion with cryptand [2,2,2] is better than cryptand [2,2], the cryptands show good extractability for cadmium ion when the concentration of cryptand is 2×10-3M and Me4NOH concentration is 4×10-2M. The salt effect and the influence of other ions are relatively small. |
| Keywords: cryptand cadmium extraction |
| 投稿时间：1986-12-25 |
| 摘要点击次数: 1726 |
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| 沈定米,王素华.穴醚[2, 2, 2]和穴醚[2, 2]对镉离子萃取行为的研究[J].无机化学学报,1987,3(4):150-155. |
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