GB/T 4324.20-2012 Methods for chemical analysis of tungsten.Part 20:Determination of vanadium content.Inductively coupled plasma atomic emission spectrometry (English Version)
This part of GB/T4324 specifies the method for the determination of vanadium in tungsten powder, tungsten rod, tungsten carbide, tungsten trioxide, blue tungsten, purple tungsten, ammonium metatungstate and ammonium paratungstate. This part applies to the determination of vanadium content in tungsten powder, tungsten bar, tungsten carbide, tungsten trioxide, blue tungsten, purple tungsten, ammonium metatungstate and ammonium paratungstate. The measuring range is 0.000 2%~0.01%.
GB/T 4324.20-2012 history
2012GB/T 4324.20-2012 Methods for chemical analysis of tungsten.Part 20:Determination of vanadium content.Inductively coupled plasma atomic emission spectrometry
1984GB/T 4324.20-1984 Methods for chemical analysis of tungsten--The N-benzoyl-N-phenylhydroxylamine photometric method for the determination of vanadium content