GB/T 6150.12-2008 Methods for chemical analysis of tungsten concentrates.Determination of silicon dioxide content.The silicomolybdenum blue spectrophotometry and the gravimetry (English Version)
This method specifies the method for the determination of silica content in tungsten concentrates. This method is suitable for the determination of silica content in tungsten concentrate. Measuring range (mass fraction): 0.50% to 3.00%. Method 2 Measuring range (mass fraction): ≥3.00% to 10.00%.
GB/T 6150.12-2008 history
2023GB/T 6150.12-2023 Methods for chemical analysis of tungsten concentrates - Part 12: Determination of silica content by silicon molybdenum blue spectrophotometric and gravimetric methods
2008GB/T 6150.10-2008 Methods for chemical analysis of tungsten concentrates.Determination of lead content.Flame atomic absorption spectrometric method
1985GB/T 6150.12-1985 Methods for chemical analysis of tungsten concentrates--The hydrochloric acid-sodium chloride supporting electrolyte polarographic method for the determination of lead content
GB/T 6150.12-2008 Methods for chemical analysis of tungsten concentrates.Determination of silicon dioxide content.The silicomolybdenum blue spectrophotometry and the gravimetry has been changed from GB/T 6150.14-1985 Methods for chemical analysis of tungsten concentrates--The molybdenum blue photometric method for the determination of silicon dioxide content.