GB/T 4324.10-1984 Methods for chemical analysis of tungsten--The neocuproine photometric method for the determination of copper content (English Version)
This standard is applicable to the determination of copper content in tungsten powder, tungsten bar, tungsten trioxide, tungstic acid and ammonium paratungstate. Measuring range: 0.0003% to 0.0030%.
GB/T 4324.10-1984 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