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电感耦合等离子体原子发射光谱(ICP—AES)已应用测定地质样品中从镧(La)到镥(Lu)(铽除外)稀土元素(REE)。REE的组分离首先用过氧化钠和样品熔融,以便除去大量的基体,然后用钇(Y)载体形成氟化物沉淀。这样使光谱干扰减至最小,并且为在地壳各处的分布量的浓度标准提供适合的炅敏度。对于绝大多数元素其精密度是3～5％,对于接近测定极限浓度的某些低含量元素,其精密度大约为10％。把测定一系列参考样品所获得的结果同文献的值相比较,表明该方法是为地球化学研究提供稀土元素分布数据的有效方法。
Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP-AES) has been used to measure rare earth elements (REEs) from lanthanum (La) to terbium (excluding terbium) in geological samples. The set of REEs was first melted with sodium peroxide and the sample in order to remove a large amount of matrix and then the fluoride precipitate was formed with yttrium (Y) support. This minimizes spectral interferences and provides suitable sensitivity for concentration levels of distribution throughout the crust. For most elements the precision is 3 to 5%, and for some low content elements close to the limit of detection the precision is around 10%. Comparison of the results obtained from a series of reference samples with the literature shows that the method is an effective method for providing REE data for geochemical studies.