This part of GB/Work 20975 stipulates the determination of vanadium content in aluminum and aluminum alloys by spectrophotometry and uniform titration of ferrous sulfate. This part is applicable to the arbitration determination of vanadium content in aluminum alloys. Spectrophotometric determination range of tea formyl tea gum: 0.0005%% to 1.00%. The determination range of ferrous sulfate uniform titration method: >1.00 to -12.00 cans.
GB/T 20975.13-2020 Referenced Document
GB/T 8005 Aluminium and aluminium alloys--Terms and definitions
GB/T 8170 Rules of rounding off for numerical values & expression and judgement of limiting values
GB/T 20975.13-2020 history
2020GB/T 20975.13-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 13:Determination of vanadium content
2008GB/T 20975.13-2008 Methods for chemical analysis of aluminium and aluminium alloys.Part 13:Determination of vanadium content.N-benzoyl-Nphenylhydroxylamine spectrophotometric method
2001GB/T 6987.13-2001 Aluminium and aluminium alloys--Determination of vanadium content--N-benzoyl-Nphenylhydroxylamine spectrophotometric method