XB/T 626-2019 Methods for chemical analysis of thulium, ytterbium, and lutetium concentrates. Determination of the proportions of fifteen rare earth element oxides. Inductively coupled plasma atomic emission spectrometry. (English Version)
2019XB/T 626-2019 Methods for chemical analysis of thulium, ytterbium, and lutetium concentrates. Determination of the proportions of fifteen rare earth element oxides. Inductively coupled plasma atomic emission spectrometry.