GB/T 4324.19-2012 Methods for chemical analysis of tungsten.Part 19:Determination of titanium content.The diantipyrylmethane photometric spectrophtometry (English Version)
This part of GB/T 4324 specifies the method for the determination of titanium content in tungsten. This part applies to the determination of titanium content in tungsten powder, tungsten bar, tungsten trioxide, blue tungsten, purple tungsten, tungstic acid, ammonium metatungstate, ammonium paratungstate and carbide. The measurement range is 0.0005% to 0.012%.
GB/T 4324.19-2012 history
2012GB/T 4324.19-2012 Methods for chemical analysis of tungsten.Part 19:Determination of titanium content.The diantipyrylmethane photometric spectrophtometry
1984GB/T 4324.19-1984 Methods for chemical analysis of tungsten--The diantipyrylmethane photometric method for the determination of titanium content