GB/T 12690.13-2003
稀土金属及其氧化物中非稀土杂质化学分析方法 钼、钨量的测定 电感耦合等离子体发射光谱法和电感耦合等离子体质谱法
Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides-Determination of molybdenum and tungsten content-Inductively coupled plasma atomic emission spectrographic method and inductively coupled plasma mass spectrum me