GB/T 12690.5-2003 稀土金属及其氧化物中非稀土杂质化学分析方法　铝、铬、锰、铁、钴、镍、铜、锌、铅的测定　电感耦合等离子体发射光谱法(方法1)　钴、锰、铅、镍、铜、锌、铝、铬的测定　电感耦合等离子体质谱法(方法2)

GB/T 12690.5-2003 Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides—Determination of Al、Cr、Mn、Fe、Co、Ni、Cu、Zn、Pb content by inductively coupled plasma atomic emission spectrographic method and Determination of Co、Mn、Pb、Ni、Cu、Zn、Al、Cr content by inductively coupled plasma mass spectrum method