GB/T 4324.2-2012 Methods for chemical analysis of tungsten.Part 2:Determination of bismuth content.Hydrogenate atomic absorption spectrometry (English Version)
This part of GB/T 4324 specifies the determination method for bismuth content in tungsten powder, tungsten bar, tungsten trioxide, blue tungsten, purple tungsten, tungsten carbide, tungstic acid, ammonium metatungstate and ammonium paratungstate. This part applies to the determination of bismuth content in tungsten powder, tungsten bar, tungsten trioxide, blue tungsten, purple tungsten, tungsten carbide, tungstic acid, ammonium metatungstate and ammonium paratungstate. The measuring range is 0.00030%~0.020%.
GB/T 4324.2-2012 history
2023GB/T 4324.2-2023 Methods of chemical analysis of tungsten Part 2: Determination of bismuth and arsenic content
2012GB/T 4324.2-2012 Methods for chemical analysis of tungsten.Part 2:Determination of bismuth content.Hydrogenate atomic absorption spectrometry
1984GB/T 4324.2-1984 Methods for chemical analysis of tungsten--The potassium iodide-brucine photometric method for the determination of bismuth content