交换树脂-活性炭动态吸附极谱法测定矿石中的微量铂  

Oscillopolarographic Determination of Platinum in Ores after Dynamic Concentration with Anionic Exchange Resin and Activated Charcoal

作　　者：郑浩 金世兰 曾杨 许晓洁 甄保新 

机构地区：[1]新疆矿产实验研究所,新疆乌鲁木齐830000

出　　处：《岩矿测试》2002年第3期227-229,238,共4页Rock and Mineral Analysis

摘　　要：矿石中微量铂经 71 7阴离子交换树脂 -活性炭动态吸附富集后 ,Pt的回收率在 95 %～ 1 0 3 %。以H2 SO4-NH4Cl-六次甲基四胺 -硫酸联氨为底液 ,极谱法测定。方法经GBW系列国家标准物质分析检验 ,结果与标准值相符 ,对w(Pt) =6.4× 1 0 -9的GBW 0 72 90国家标准物质测定 7次 ,RSD =7.1 %。方法适用于矿石中Pt含量在 1 0 -6～ 1 0 -9级的测定。A method for the determination of platinum in ores was developed in this paper. In the medium of H 2SO 4-NH 4Cl-[(CH 2) 6N 4]-NH 2NH 2·H 2SO 4 platinum was determined by oscillopolarography after dynamic concentration with anionic exchanger resin and activated charcoal. The method has been applied to the determination of platinum in national standard reference samples. The results are in agreement with the certified values with precision of 7.1% RSD ( n =7). The method is suitable for the determination of platinum in ores with platinum concentration range of 10 -6 ～10 -9 .

关 键 词：矿石 树脂 活性炭 富集 铂 极谱法 

分 类 号：P578.12[天文地球—矿物学] P575.4[天文地球—地质学]