This part of GB/T20975 specifies the determination of antimony content in aluminum and aluminum alloys by potassium iodide spectrophotometry and cerium sulfate titration. This section applies to the arbitration determination of antimony content in aluminum and aluminum alloys. Potassium iodide spectrophotometry measurement range: 0.0040% ~ 0.25%; cerium sulfate titration measurement range: 4.00% ~ 16.50%.
GB/T 20975.23-2020 Referenced Document
GB/T 8005.2 Terms of aluminium and aluminium alloys—Part 2:Chemical analysis
GB/T 8170-2008 Rules of rounding off for numerical values & expression and judgement of limiting values
GB/T 20975.23-2020 history
2020GB/T 20975.23-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 23:Determination of antimony content
2008GB/T 20975.23-2008 Methods for chemical analysis of aluminium and aluminium alloys.Part 23: Determination of antimony content.Potassium iodide spectrophotometric method
2001GB/T 6987.23-2001 Aluminium and aluminium alloys--Determination of antimony content--Potassium iodide spectrophotometric method