
Methods for chemical analysis of Tantalum and Niobium ores—Determination of Tantalum content—Preconcentration and separation with silica gel-Butyl rhodamine B extraction photometric method
NORM herausgegeben am 17.6.1998
Designation standards: GB/T 17415.1-1998
Note: UNGÜLTIG
Publication date standards: 17.6.1998
Country: Chinese technical standard
Kategorie: Technische Normen GB