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由于电感耦合等离子体发射光谱(ICP—OES)具有高的灵敏度和好的重现性,所以已成为测定稀土、钪和钇非常有用的技术。但是,在分离伴生元素(基质元素)时,由于天然样品组分的变化,可能引起一些问题。在本研究中,提出了一种从8个主要元素和27个痕量元素中分离稀土的简单方法。当进行离子交换分离时,一些主要的基质元素根据其种类和性质的不同,可引起轻稀土元素回收率不同程度的降低.本文叙述了两种相似树脂的特性,不完全地分离了一些痕量基质元素。在分离后,定量地研究了残留的基质元素对稀土测定的影响和干扰。最后,本文还叙述了在测定稀土元素时,它们之间的干扰。对所提出的方法通过标准物质的分析进行了验证。
Inductively coupled plasma (ICP-OES) has become a very useful technique for the determination of rare earth, scandium and yttrium because of its high sensitivity and good reproducibility. However, when isolating associated elements (matrix elements), some problems may arise due to changes in the composition of the natural sample. In this study, a simple method of separating rare earths from eight major elements and twenty-seven trace elements was proposed. When the ion exchange separation is carried out, some of the major matrix elements can cause different degrees of reduction of light rare earth elements recovery depending on their types and properties.This paper describes the characteristics of two similar resins, incomplete separation of some traces Matrix elements. After separation, the influence and interference of residual matrix elements on the determination of rare earths were quantitatively studied. Finally, this article also describes the interference between rare earth elements in their determination. The proposed method is validated by the analysis of standard materials.