GB/T 14849.7-2015 Methods for chemical analysis of silicon metal.Part 7:Detemination of phosphorus content.Phosphorus molybdenum blue spectrophotometry
This part of GB/T 14849 specifies the method for the determination of phosphorus content in industrial silicon. This part is applicable to the determination of phosphorus content in industrial silicon, the determination range (mass fraction): 0.001 0%~0.30%.
GB/T 14849.7-2015 Referenced Document
GB/T 6682 Water for analytical laboratory use.Specification and test methods
GB/T 8170 Rules of rounding off for numerical values & expression and judgement of limiting values
GB/T 14849.7-2015 history
2015GB/T 14849.7-2015 Methods for chemical analysis of silicon metal.Part 7:Detemination of phosphorus content.Phosphorus molybdenum blue spectrophotometry