三正辛胺萃淋树脂作为贵金属组试剂同时测定贵金属的研究  

Simultaneous Determination of Noble metals with Trioctylamine Containing Resin Used as Noble Metal Group Reagent

作　　者：李玲颖[1] 许晓文[1] 安晏[1] 马锦秋[1] 余素清[1] 

机构地区：[1]南开大学化学系

出　　处：《分析试验室》1989年第6期1-4,共4页Chinese Journal of Analysis Laboratory

基　　金：国家自然科学基金

摘　　要：本文应用三正辛胺(TOA)萃淋树脂为组试剂,用ICP-AES同时测定含Au(Ⅲ)、Pd(Ⅱ)、Pt(Ⅳ)、Ir(Ⅳ)、Rh(Ⅲ)的合成样,获得满意的结果。通过静态吸附试验,查明了Au、Pd、Pt、Ir、Rh、Os(Ⅳ)、Ru(Ⅳ)同时被吸附完全的最佳酸度、温度以及达到平衡时间,并测得Au和Pd的最大吸附容量。并利用KI将RhCl_6^(3-)转变为Rhl_3^(3-),达到Rh既能被树脂吸附又能与贱金属分离的目的。An analytical method for simultaneous determination of Au(Ⅲ), Pd(Ⅱ). Pt(Ⅳ), Ir(Ⅳ), Rh(Ⅲ) was suggested with trioctylamine (TOA) containing resin (Levextrel type) as a group reagent. The optimal conditions as to time, acidity and tempereture, for the adsorption of Ru(Ⅳ), Os(Ⅳ) and metals mentioned above was studied in detail. In order to adsorb Rh(Ⅲ) completely by the resin, it should be previously converted to Rh Ⅰ by treating with Kl in a separate aliquot. This step permits the reduction of Au(Ⅲ) and Pd(Ⅱ) by Kl. All noble metals then could be separated from base metals in 1mol/L HCI medium. Several synthetic samples containing 21 base metals and the five noble metals were analyzed for Au, Pd, Pt, Ir, and Rh with good recovery.

关 键 词：萃淋树脂 贵金属 测定 试剂 TOA 

分 类 号：O652.3[理学—分析化学]