GB/T 6150.4-2008 Methods for chemical analysis of tungsten concentrates.Determination of sulfur content .The high frequency-infrared absorption method (English Version)
This part specifies the determination method of sulfur content in tungsten concentrate. This section applies to the determination of sulfur content in tungsten concentrate. Measuring range: 0.1% to 2%.
GB/T 6150.4-2008 history
2023GB/T 6150.4-2023 Methods of chemical analysis of tungsten concentrates-Part 4: Determination of sulfur content by high-frequency induction infrared absorption method and combustion-iodometric method
2009GB/T 6150.3-2009 Methods for chemical analysis of tungsten concentrates-Determination of phosphotus content-The phosphorus molybdenum yellow spectrophotometry
2008GB/T 6150.4-2008 Methods for chemical analysis of tungsten concentrates.Determination of sulfur content .The high frequency-infrared absorption method
1985GB/T 6150.4-1985 Methods for chemical analysis of tungsten concentrates--The molybdenum yellow photometric method for the determination of phosphorus content
GB/T 6150.4-2008 Methods for chemical analysis of tungsten concentrates.Determination of sulfur content .The high frequency-infrared absorption method has been changed from GB/T 6150.5-1985 Methods for chemical analysis of tungsten concentrates--The barium sulfate gravimetric method for the determination of sulfur content.