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 .
出处
《岩矿测试》
CAS
CSCD
北大核心
2002年第3期227-229,238,共4页
Rock and Mineral Analysis
关键词
矿石
树脂
活性炭
富集
铂
极谱法
resin
activated charcoal
preconcentration
platinum
oscillopolarography
