GB/T 12690.5-2017
ActiveChemical analysis methods for non-rare earth impurities of rare earth metals and their oxides—Part 5: Determination of cobalt,manganese,lead,nickel,copper,zinc,aluminum,chromium,magnesium,cadmium,vanadium and iron contents
稀土金属及其氧化物中非稀土杂质化学分析方法 第5部分:钴、锰、铅、镍、铜、锌、铝、铬、镁、镉、钒、铁量的测定