GB/T 14352.20-2021
China national
standard english version:
GB
中华人民共和国国家标准
NATIONAL
STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 14352.20-2021
Methods for chemical analysis of tungsten ores and molybdenum ores -- Part 20:Determination of niobium,tantalum,zirconium,hafnium and 15 rare earth elements content -- Inductively coupled plasma mass spectrometry 钨矿石、钼矿石化学分析方法 第20部分:铌、钽、锆、铪及15个稀土元素量的测定 电感耦合等离子体质谱法
Issued Date:2021/3/9
Implemented Date:2021/10/1
Issued by:
The Standardization Administration of the People's Republic of China