GB/T 4324.3-2012 Methods for chemical analysis of tungsten.Part 3:Determination of tin content.Hydrogenate atomic absorption spectrometry (English Version)
This part of GB/T 4324 specifies the determination method of tin content in tungsten powder, tungsten bar, tungsten trioxide, blue tungsten, purple tungsten, tungsten carbide, tungstic acid, ammonium metatungstate and ammonium paratungstate. This part is applicable to the determination of tin 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 0.00005%~0.020%.
GB/T 4324.3-2012 history
2012GB/T 4324.3-2012 Methods for chemical analysis of tungsten.Part 3:Determination of tin content.Hydrogenate atomic absorption spectrometry
1984GB/T 4324.3-1984 Methods for chemical analysis of tungsten--The polyethylene glycol octyl phenyl ether-phenylfluorone photometric method for the determination of tin content