DBC-CPA显色树脂相光度法测定铁矿中稀土总量方法研究  

DBC-CPA-RE Resin Spectrophotometric Determination of the Total Amount of Rare Earth in Iron Ores

作　　者：何久康 苏淑琴[1] 彭姝丽[1] 

机构地区：[1]内蒙古大学化学系

出　　处：《内蒙古大学学报（自然科学版）》1989年第1期87-90,共4页Journal of Inner Mongolia University：Natural Science Edition

摘　　要：本文研究了DBC-CPA与稀土元素反应形成络合物吸附在树脂上的各种实验条件表明,在强酸介质中反应瞬时完成,加入V_c还原Fe^(3+)后,有色络合物与树脂混合搅拌5分钟即可吸附于树脂上其最大吸收峰位于660nm处,用拟定方法测定铁矿标样中稀土总量,结果满意。This article wants to give a new way, which combine the new photometric agent DBC—CPA with the resin phase spectrophotometric to make the determination of the total of Rare Earth much more sensitive and selective. In the strong acid solution, mixtural rare earth can be absorbed on the resin in blue—violet colour. The wavelength maximum absorbance is at 660nm. Beer's Law is obeyed for the total amount of Rare Earth of 0—6ug/25ml. Using this method, only Vc is added to mask iron(Ⅲ)and many other metal ions do not interfere the determination. The satisfactory results can be obtained in the determination of the total amount of Rare Earth in Iron ores.

关 键 词：树脂 分光光度法 稀土 

分 类 号：P618.705[天文地球—矿床学]