China 'GB/T 6150.7-2008
' standard english version:
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 6150.7-2008
Methods for chemical analysis of tungsten concentrates - Determination of tantalum content and niobium content - Inductively coupled plasma emission spectrometry and spectrophotometry 钨精矿化学分析方法 钽铌量的测定 等离子体发射光谱法和分光光度法
Issued Date:2008-06-17
Implemented Date:2008-12-01
Issued by:
The Standardization Administration of the People's Republic of China