二苯并—24—冠—8硝基甲烷萃取分离金、铂、钯—原子吸收法测定金

Extraction-separation of gold, platium and palladium by solution of dibenzo-24-crown-8 in nitromethane——determination of gold by AAS

本文应用二苯并—24—冠—8(DB24C8) 硝基甲烷溶液对王水体系中的Au(Ⅲ)、Pt(Ⅳ)、Pd(Ⅳ)进行了研究.结果表明,采用DB24C8硝基甲烷体系可使金与铂、钯分离.金的平均回收率可达99%.

The separation of Au(Ⅲ), Pt(IV)and Pd(IV)in a system of nitro-hydrochloric acid by the solution of dibenzo-24-crown-8(DB2408)in nitromethane extraction is studied. It shows that Au can be separated from Pt and Pd by this method and the average recovery of Au comes up to 99%.