铁对含氮树脂吸附金性能的影响研究——矿石中金的测定  

Studies on Effect of Iron on the Adsorption Behavior of Au (Ⅱ) by Several Nitrogen Containing Resins

作　　者：李玲颖[1] 傅建文[1] 安晏[1] 林雪[2] 

机构地区：[1]南开大学化学系,天津300071 [2]南开大学高分子化学研究所

出　　处：《分析试验室》1992年第5期7-9,共3页Chinese Journal of Analysis Laboratory

摘　　要：本文研究了数种不同功能基的含氮树脂分离富集Au(Ⅲ)时,Fe(Ⅲ)对Au(Ⅲ)吸附率的影响。实验表明,Fe(Ⅲ)含量低时无影响,但当Fe/Au重量比高达2500～3500以上时,Au(Ⅲ)的吸附率显著降低。我们认为这是Fe(Ⅲ)与Au(Ⅲ)竞争吸附的结果。适当提高柱长,Fe/Au的允许重量比值即可增加,从而可用于一般金矿石(含Fe5%左右)中Au(Ⅲ)的测定。The effect of Fe(Ⅲ) on the adsorption percentage of Au (Ⅲ) using several nitrogen containing resins was studied. When the weight ratios of Fe/Au (Ⅲ) was greater than 2500(3500 for AP resin),Au(Ⅲ) could not be quantitatively adsorbed on a short column,such as 5cm high. This was due to the fact that great competitive adsorption force of Fecl_4^- compels AuCl_4^- to remain in solution. By increasing the length of the column, the adsorption of Au(Ⅲ) would be quantitative. The analytical results of Au(Ⅲ) in ores are perfectly good with all the resins investigated.

关 键 词：铁 含氮 树脂 金 吸附率 矿石 

分 类 号：O614.123[理学—无机化学]