GB/T 12690.16-2010 Chemical analysis methods of non-rare earth impurities in rare earth metals and the oxides—Part 16:Determination of fluorine content—Ion selective electrode analysis (English Version)
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GB/T 12690.16-2010
Scope
This part of GB/T 12690 specifies the determination method for the amount of fluorine in rare earth metals and oxides. This section applies to the determination of the amount of fluorine in rare earth metals and oxides. Measuring range: 0.010% to 0.50%.
GB/T 12690.16-2010 history
2018GB/T 12690.15-2018 Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides―Part 15: Determination of calcium content
2006GB/T 12690.15-2006 Chemical analysis methods for non-rare earth metals and their oxide.Determination of calcium oxide content
1990GB/T 12690.16-1990 Rare-earth metals and their oxides--Determination of calcium content--Flame atomic absorption spectrometric method