样品酸溶后、加载体钇,用氢氧化钠使稀土与钇共沉淀。沉淀酸溶后,再用草酸沉淀,以基体钇作内标,发射光谱法测定镧、铈、错、钕、钐。 Acid sample solution, the carrier yttrium, sodium hydroxide with rare earth and yttrium co-precipitation. Precipitated acid, and then precipitated with oxalic acid, the substrate yttrium as an internal standard, emission spectrometry determination of lanthanum, cerium, wrong, neodymium, samarium.