GB/T 12690.2-2015 Chemical analysis methods for non-rare earth impurity of rare earth metals and their oxides.Part 2: Determination of ignition loss content of rare earth oxides.Gravimetric method (English Version)
This part of GB/T 12690 specifies the method for the determination of ignition loss in rare earth oxides. This section applies to the determination of rare earth oxide ignition loss. Measuring range: 0.10%~15.00%.
GB/T 12690.2-2015 history
2015GB/T 12690.2-2015 Chemical analysis methods for non-rare earth impurity of rare earth metals and their oxides.Part 2: Determination of ignition loss content of rare earth oxides.Gravimetric method
2002GB/T 12690.2-2002 Chemical analysis methods for non-RE impurity of rare earth metals and their oxides Determination of ignition loss content of rare earth oxides-Gravimetric method
1990GB/T 12690.2-1990 Lanthanum oxide--Determination of neodymium oxide, cerium oxide, praseodymium oxide, samarium oxide and yttrium oxide contents-Emission spectrographic method