应用HDEHP萃淋树脂萃取色谱分离快速测定矿石中微量铈组和钇组稀土  

Rapid Determination of Ce- and Y-group Rare Earth in Ores by Chromatographic Separation with HDEHP Extraction Resin

作　　者：陈达仁 吴子言 Chen Da-ren;Wu Zhi-yan

机构地区：[1]广东省地质局中心实验室 [2]广东矿冶学院分析系

出　　处：《岩矿测试》1983年第3期215-215,I0006,共2页Rock and Mineral Analysis

摘　　要：HDEHP萃淋树脂,其载体是苯乙烯二乙烯苯的共聚合物,固定相是HDEHP[即二-(2-乙基已基)—磷酸]。这种萃淋树脂的主要优点是萃取容量较大、有机固定相不易脱落、洗脱曲线形状良好,但能否用于矿石中稀土元素的分组,尚未见有报导。本实验选用此种萃淋树脂,以不同浓度的盐酸为流动相,进行了铈组、钇组稀土的分离洗脱条件试验。然后分别加大掩蔽剂,直接用光度法测定各组稀土。标准回收试验及矿石分析质量符合地质要求。铈组稀土回收率为98.8-109%,钇组稀土回收率为93.7-102%。An extraction chromatographic method for rapid separation of Ce- and Y-group of rare earth in ores using HDEHP resin has been studied. The Ce- group was separated quantitatively from Y-group by elution with 50 ml of 0.4 N hydrochloric acid and the Y-group was eluted quantitatively with 50 ml of 4 N hydrochloric acid. Each component can be determined by direct photometric method.

关 键 词：共聚合物 萃取色谱分离 萃取容量 回收试验 洗脱条件 掩蔽剂 萃淋树脂 铈组稀土 

分 类 号：F42[经济管理—产业经济]