China 'GB/T 12690.12-2024
' standard english version:
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 12690.12-2024
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 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
Issued Date:2024.4.25
Implemented Date:2024.11.1
Issued by:
The Standardization Administration of the People's Republic of China
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