稀土矿物中 Sc_2 O_3 的含量通常在0.00x%左右。在发射光谱分析中,最灵敏的光谱线 Sc4246.83(?),因受稀土矿物中Ce4246.71(?)和 Nd4246.88的干扰,即使采用大色散光谱仪(2(?)/mm)也无法直接测定;若采用不受稀土元素干扰的次灵敏线Sc4314.08(?)作分析线则灵敏度不够。本法采用 C·H_2 SO_4 分解矿样,样品溶液先经 NH_4 OH-NH_4 Cl 沉淀除去大量的 The content of Sc_2O_3 in rare earth minerals is usually around 0.00x%. In the emission spectrum analysis, the most sensitive spectral line Sc4246.83 (?), Due to the interference of Ce4246.71 (?) And Nd4246.88 in rare earth minerals, even with the large dispersion spectrometer (2 (?) / Mm) Can not be directly measured; if not sensitive to rare earth elements secondary sensitivity line Sc4314.08 (?) For the analysis of the line is not enough sensitivity. This method uses C · H 2 SO 4 decomposition of ore samples, the sample solution was first NH_4 OH-NH_4 Cl to remove a large amount of