GB/T 12690.11-2003 Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides-Determination of magnesium content-Flame atomic absorption spectrometric method (English Version)
General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest
GB/T 12690.11-2003
Replace
GB/T 12690.25-1990
Scope
This part specifies the method for the determination of magnesium content in rare earth metals and their oxides. This section applies to the determination of magnesium content in rare earth metals and their oxides. Measuring range (mass fraction): 0.0005% to 0.300%.
GB/T 12690.11-2003 history
2003GB/T 12690.11-2003 Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides-Determination of magnesium content-Flame atomic absorption spectrometric method