GB/T 4324.10-2012 Methods for chemical analysis of tungsten.Part 10:Determination of copper content.Flame atomic absorption spectrometry (English Version)
This part of GB/T 4324 specifies the determination method of copper content in tungsten powder, tungsten bar, tungsten carbide, tungsten trioxide, tungstic acid, blue tungsten, purple tungsten, ammonium paratungstate and ammonium metatungstate. This part is applicable to the determination of copper content in tungsten powder, tungsten rod, tungsten carbide, tungsten trioxide, tungstic acid, blue tungsten, violet tungsten, ammonium paratungstate and ammonium metatungstate. The determination range is 0.0003% to 0.0030%.
GB/T 4324.10-2012 history
2012GB/T 4324.10-2012 Methods for chemical analysis of tungsten.Part 10:Determination of copper content.Flame atomic absorption spectrometry
1984GB/T 4324.10-1984 Methods for chemical analysis of tungsten--The neocuproine photometric method for the determination of copper content