NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 12690.12-2024
稀土金属及其氧化物中非稀土杂质-化学分析方法-第12部分:钍、铀量的测定-电感耦合等离子体质谱法 Non-rare earth impurities in rare earth metals and their oxides - Chemical analysis methods - Part 12: Determination of thorium and uranium content - Inductively coupled plasma mass spectrometry
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国家市场监督管理总局 国家标准化管理委员会
The Standardization Administration of the People's Republic of China
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Non-rare earth impurities in rare earth metals and their oxides - Chemical analysis methods - Part 12: Determination of thorium and uranium content - Inductively coupled plasma mass spectrometry