GB/T 12690.14-2006 Chemical analysis methods for non-rare earth impurities in rare earth metals and their oxide.Determination of titanium in rare earth metals (English Version)
This method specifies the method for the determination of titanium content in single rare earth metals and mixed rare earth metals. This method is applicable to the determination of titanium content in rare earth metals and mixed rare earth metals. Measuring range: 0.0050% to 0.50%.
GB/T 12690.14-2006 history
2017GB/T 12690.5-2017 Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides—Part 5: Determination of cobalt,manganese,lead,nickel,copper,zinc,aluminum,chromium,magnesium,cadmium,vanadium and iron contents
2003GB/T 12690.5-2003 Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides Determination of Al, Cr, Mn, Fe, Co, Ni, Cu, Zn, Pb content by inductively coupled plasma atomic emission spectrographic method and Determination of Co, Mn, Pb,
1990GB/T 12690.14-1990 Lanthanum oxide, cerium oxide, neodymium oxide, gadolinium oxide--Determination of cobalt, iron,manganese, nichel, copper, ckromium, lead and zinc in oxides contents--Emission spectrographic method