P_(507)萃取色谱分离三溴偶氮胂光度法测定矿石中痕量铈组稀土

Spectrophotometric Determination of Ce Sub-Group REE with Tribromoarsenazo by Using P_(507) Resin Separation

本文改进了三溴偶氮胂与铈组稀土的显色反应条件,提高了铈组稀土测定的选择性并采用P_(507)萃淋树脂分离富集稀土元素。所拟定的矿石中痕量铈组稀土的测定方法,操作简便快速,易于掌握,适于矿石中0.000x～0.x％含量的铈组稀土的测定。经标准矿样验证,精密度、准确度均符合要求。

Experiments were conducted to improve on the selectivity for the photometric determination of Ce sub-group REE with tribromoarsenazo, and P507 resin separation is applied to enrich REE. The present method is sufficient to determine Ce sub-group REE in the range from 0.000x to 0.x.% in rocks.