GB/T 18114.4-2010
稀土精矿化学分析方法.第4部分:氧化铌、氧化锆、氧化钛量的测定.电感耦合等离子体发射光谱法
Chemical analysis methods of rare earth concentrates.Part 4: Determination of niobium oxide, zirconium oxide and titanium oxide contents.Inductively coupled plasma atomic emission spectrometry