GB/T 4325.28-1984 Methods for chemical analysis of molybdenum--The tetraphenyl arsonium chloride hydrochloride-thiocyanate photometric method for the determination of tungsten content (English Version)
This standard is applicable to the determination of tungsten content in molybdenum powder, molybdenum bar, molybdenum trioxide and ammonium molybdate. Measuring range: 0.0080~1.00%.
GB/T 4325.28-1984 history
2013GB/T 4325.24-2013 Method for chemical analysis of molybdenum.Part 24:Determination of tungsten content.Inductively coupled plasma atomic emission spectrometry
1984GB/T 4325.28-1984 Methods for chemical analysis of molybdenum--The tetraphenyl arsonium chloride hydrochloride-thiocyanate photometric method for the determination of tungsten content
GB/T 4325.28-1984 Methods for chemical analysis of molybdenum--The tetraphenyl arsonium chloride hydrochloride-thiocyanate photometric method for the determination of tungsten content was changed to GB/T 4325.24-2013 Method for chemical analysis of molybdenum.Part 24:Determination of tungsten content.Inductively coupled plasma atomic emission spectrometry.