This standard is applicable to the determination of manganese content in tungsten powder, tungsten bar, tungsten trioxide, tungstic acid and ammonium paratungstate. Measuring range: 0.0005~0.020%.
GB/T 4324.22-1984 history
2012GB/T 4324.22-2012 Methods for chemical analysis of tungsten.Part 22:Determination of manganese content.Inductively coupled plasma atomic emission spectrometry
1984GB/T 4324.22-1984 Methods for chemical analysis of tungsten--The formaldoxime photometric method for manganese content