This standard specifies the method for the determination of the total amount of ionic phase rare earths in ionic rare earth raw ores. This standard is applicable to the determination of the total amount of ionic phase rare earths in ionic rare earth raw ores, and includes three methods: Method 1 Inductively Coupled Plasma Mass Spectrometry, Method 2 Inductively Coupled Plasma Atomic Emission Spectrometry, and Method 3 EDTA Volumetric Method. The measurement range of method 1 is: 0.010% ~ 0.50%; the measurement range of method 2 is: 0.020% ~ 0.50%; the measurement range of method 3 is: 0.020% ~ 0.50%. Among them, method 3 is not suitable for the determination of samples with iron content greater than 10 in the solution after leaching or copper content greater than 5.
XB/T 619-2015 history
2015XB/T 619-2015 Chemical analysis methods of ion type rare earth ore.Determination of total rare earth ion phase