摘要:
作者等就多年来在萃淋树脂及螯合树脂在金属元素分离及试剂纯化方面所取得的经验和成果作了总结.在萃淋树脂方面,概要地叙述了此类树脂的制备方法,其选择性及应用等内容.就螯合树脂方面几种突出实例,如Chelex 100树脂应用于从碱金属及碱土金属离子溶液中选择性地分离两价重金属;Amberlite 743硼选择性树脂用于选择性分离以BO33-或BF-4形式存在的硼(Ⅲ)离子;LZ 85树脂用于制备高纯度含钴试剂及353E树脂用于吸附分离金属离子与氰根形成的络合离子如Au(CN)-4、Ag(CN)-2等作了介绍.此外,还对应用阴离子交换树脂,如Dowex 1-X8,分离金属离子与氯离子生成的络阴离子,如[AuCl6]3-、[FeCl4]-等;对阳离子交换树脂用于制备高纯铀等特例作了简述.%A summary of works of the authors on the application of extraction resin and chelating resin to separation of metal ions and purification of reagents was given. On the topic of extraction resin a brief on its preparation, selectivity and applications was narrated. As related to chelating resin, application of some important resins, i. e., the resins of chelex-100. Amberlite 743 (a special and selective resin for adsorption of boron(Ⅲ) in forms of BO33- or BF4- )., LZ 85 (a special resin for adsorption of Co2+ ion and preparation of high-purity cobalt reagents), and 353E (a selective resin for adsorption of metal cyanide complexes, e. g. , Au(CN)4-, Ag(CN)2- etc. ) was reviewed. In addition, the applications of anion exchange resin, i. e., Dowex l-X8, to separations of anionic complexes of metal chlorides, e. g. , [AuCl6 ]3-, [FeCl4 ]- etc. , and of cation exchange resins to the preparation of high-purity uranium were also given.