This standard specifies the determination method for the total content of rare earth elements in mixed rare earth metals and the total content of oxidized rare earth elements in their compounds (oxides, hydroxides, fluorides, chlorides). This standard applies to the determination of the total content of rare earth elements in mixed rare earth metals and the total content of rare earth oxides in their compounds (oxides, hydroxides, fluorides, chlorides). The measurement range is shown in Table 1.
GB/T 14635.1-1993 history
2020GB/T 14635-2020 Rare earth metals and their compounds—Determination of total rare earth content
2008GB/T 14635-2008 Rare earth metals and their compounds.Determination of total rare earth contents
1993GB/T 14635.1-1993 Rare earth metals and their compounds. Determination of total rare earth contents. Rare earth oxalate gravimetric method
GB/T 14635.1-1993 Rare earth metals and their compounds. Determination of total rare earth contents. Rare earth oxalate gravimetric method was changed to GB/T 14635-2008 Rare earth metals and their compounds.Determination of total rare earth contents.