GB/T 4324.4-2012 Methods for chemical analysis of tungsten.Part 4:Determination of antimony content.Hydrogenate atomic absorption spectrometry (English Version)
This part of GB/T 4324 specifies the determination method of antimony content in tungsten powder, tungsten bar, tungsten trioxide, blue tungsten, purple tungsten, tungsten carbide, tungstic acid, ammonium metatungstate, ammonium paratungstate. This part applies to tungsten powder , tungsten bar, tungsten trioxide, blue tungsten, violet tungsten, tungsten carbide, tungstic acid, ammonium metatungstate, ammonium paratungstate for the determination of antimony content, the determination range is 0.000 05%~0.020%,
GB/T 4324.4-2012 history
2012GB/T 4324.4-2012 Methods for chemical analysis of tungsten.Part 4:Determination of antimony content.Hydrogenate atomic absorption spectrometry
1984GB/T 4324.4-1984 Methods for chemical analysis of tungsten--The malachite green photometric method for the determination of antimony content