GB/T 4324.11-2012 Methods for chemical analysis of tungsten.Part 11:Determination of aluminum content.Inductively coupled plasma atomic emission spectrometry (English Version)
This part of GB/T 4324 specifies the determination method of aluminum content in tungsten powder, tungsten bar, tungsten trioxide, blue tungsten oxide, purple tungsten oxide, tungsten carbide, tungstic acid, ammonium metatungstate and ammonium paratungstate. Determination of aluminum content in tungsten powder, tungsten bar, tungsten trioxide, blue tungsten oxide, purple tungsten oxide, tungsten carbide, tungstic acid, ammonium metatungstate, ammonium paratungstate, the determination range is 0.000 5%~0.050%,
GB/T 4324.11-2012 history
2012GB/T 4324.11-2012 Methods for chemical analysis of tungsten.Part 11:Determination of aluminum content.Inductively coupled plasma atomic emission spectrometry
1984GB/T 4324.11-1984 Methods for chemical analysis of tungsten--The chromazurol S photometric method for the determination of aluminum content