GB/T 15076.2-2019
鉭鈮化學分析方法 第2部分:鉭中鈮量的測定 電感耦合等離子體原子發射光譜法和色層分離重量法
Methods for chemical analysis of tantalum and niobium—Part 2:Determination of niobium content in tantalum—Inductively coupled plasma atomic emission spectrometry and stratography gravimetry
GBT15076.2-2019, GB15076.2-2019