GB/T 17415.1-1998
鉭礦石、鈮礦石化學分析方法 硅膠富集分離-丁基羅丹明B萃取光度法測定鉭量
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
GBT17415.1-1998, GB17415.1-1998