Precipitation by oxalate is the primary method to produce rare earth oxides. 稀土草酸盐沉淀法是制备稀土氧化物的主要方法。
This method could determine many non-REE in enriched-europium mixture rare earth oxide at a time and it was a rapid method. 该方法能同时测定富铕混合稀土氧化物中多种非稀土元素的含量，提高了分析速度。
