离子型稀土矿中离子稀土的ICP-AES测定方法研究  

Study on determination of rare earth ions in ion-absorbed rare earth mineral using ICP-AES

作　　者：程丽娅[1] 

机构地区：[1]安徽省地质实验研究所,安徽合肥230001

出　　处：《安徽地质》2017年第2期147-149,160,共4页Geology of Anhui

摘　　要：稀土作为一种不可再生的国家重要战略资源,具有优异的磁、光、电性能。离子吸附型稀土矿,是我国特有的新型稀土矿物,以风化淋积型稀土矿床形式存在,一般直接就地采用电解质溶液溶浸即可获得混合稀土氧化物,文中选取了稀土含量呈高中低分布的三个样品考察了浸提时间、浸提剂浓度、以及液固比对浸提效果的影响,确定了最佳的浸提方法,应用电感耦合等离子体光谱仪上机测定,通过加标回收检验方法准确度,其回收率在90-110%之间。该方法操作简单,灵敏度高(检出限为0.10~0.4μg/g),可用于大批量离子型稀土矿中浸出型稀土含量的测定。As a kind of non-renewable national major strategic resource, rare earth shows superior properties in magnetism, optics and electricity. Ion-absorbed rare earth mineral is a new type and unique in China. It is deposited by weathering and leaching, and mixed rare earth oxides can be obtained directly by electrolyte solution infiltration in situ. This paper performed a test on three samples respectively with high, middle and low content of REE to see the effect of extraction time, concentration of extracting agent and liquid-to-solid ratio on extraction result, and then to determine best extraction method. ICP-AES was used for determination, and reference material was added to check the accuracy, with recovery being 90-110%. This method is simple in operation and high in sensitivity （detection limit 0.1-0.4ug/g）, applicable to assay of such samples in large quantities.

关 键 词：电感耦合等离子体发射光谱法 稀土 离子型稀土矿 

分 类 号：P618.7[天文地球—矿床学]