GB/T 4324.18-1984 Methods for chemical analysis of tungsten--The atomic absorption spectrophotometric method for the determination of potassium content
This standard applies to the determination of potassium in tungsten powder, tungsten bar, tungsten trioxide, tungstic acid and ammonium paratungstate. Measuring range: 0.00050~0.080%.
GB/T 4324.18-1984 history
2012GB/T 4324.18-2012 Methods for chemical analysis of tungsten.Part 18:Determination of potassium content.Flame atomic absorption spectrometry
1984GB/T 4324.18-1984 Methods for chemical analysis of tungsten--The atomic absorption spectrophotometric method for the determination of potassium content