GB/T 4324.1-1984 Methods for chemical analysis of tungsten--The square wave polarographic method for the successive determination of lead and cadmium contents
This standard applies to the determination of lead and cadmium in tungsten powder, tungsten bar, tungsten trioxide, tungstic acid and ammonium paratungstate. Measuring range: 0.00005~0.0030%.
GB/T 4324.1-1984 history
2012GB/T 4324.1-2012 Methods for chemical analysis of tungsten.Part 1:Determination of lead content.Flame atomic absorption spectrometry
1984GB/T 4324.1-1984 Methods for chemical analysis of tungsten--The square wave polarographic method for the successive determination of lead and cadmium contents