Extraction of Copper(II) into Microcapsules Containing 5-Nonyl Salicylaldoxime
Extraction of Copper(II) into Microcapsules Containing 5-Nonyl Salicylaldoxime
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将铜(II)萃取到含有 5-壬基水杨醛肟的微胶囊中
DOI：
10.2116/analsci.7.487
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发表时间：
1991
影响因子：
1.6
通讯作者：
S. Hatakeyama
中科院分区：
文献类型：
--
作者：
H. Watarai;S. Hatakeyama
微胶囊和微胶囊化技术已广泛应用于制药、农业化学和化学工业的各个领域。例如，已经开发了酶和活细胞的稳定过程、人工血细胞的制备过程和生物化合物的分离过程。12然而，据作者所知，尚未报道微胶囊在金属离子分离或浓缩中的应用。本研究的目的是探讨微胶囊作为一种新的微观支持材料的配体萃取金属离子的适用性。在目前常用的微胶囊制备方法中，界面聚合法是一种易于制备小而薄的微胶囊的方法。微胶囊作为金属萃取剂的载体材料具有如下优点：1）与其它膜萃取体系相比，大的比表面积有利于加速萃取速率：2）微胶囊的芯膜和半透膜都可以作为独立的相，可以负载不同的配体; 3）微胶囊的分离可以通过过滤或沉降方法容易地进行。本文首次报道了微胶囊在金属萃取中的应用。
Microcapsules and microencapsulation techniques have been widely used in various fields involving pharmacy, agricultural chemistry and the chemical industry. For example, a stabilization process of enzymes and living cells, a preparation process of artificial blood cells and a separation process of biological compounds have been developed.12 To the authors' knowledge, however, no application of microcapsules to the separation or concentration of metal ions has yet been reported. The present study was intended to examine the applicability of microcapsules as a new microscopic supporting material of ligands for the extraction of metal ions. Among the various preparation methods of microcapsules ordinarily used, an interfacial polymerization method was adopted in the present study, because small and thin-membrane microcapsules are readily obtained. Some advantages are expected when microcapsules are used as a supporting material of a metal extractant: l) a large specific interfacial area is better for acceleration of extraction rates than that in other membrane extraction systems; 2) both core and semipermeable membranes of microcapsules can be used as independent phases which can support different ligands; 3) separation of the microcapsules can easily be done by means of a filtration or sedimentation method. In this paper some preliminary results are described as a first report on the application of microcapsules to metal extraction.