GB/T 4324.15-1984 Methods for chemical analysis of tungsten--The chlorophosphonazo I photometric method for the determination of magnesium content (English Version)
This standard is applicable to the determination of magnesium content in tungsten powder, tungsten bar, tungsten trioxide, tungstic acid and ammonium paratungstate. Measuring range: 0.00030~0.020%.
GB/T 4324.15-1984 history
2008GB/T 4324.15-2008 Methods for chemical analysis of tungsten.Determination of magnesium content.The flame atomic absorption spectrometry and inductively coupled plasma atomic emission spectrometry
1984GB/T 4324.15-1984 Methods for chemical analysis of tungsten--The chlorophosphonazo I photometric method for the determination of magnesium content