Personnel in this section should have practical experience in formal laboratory work. This section does not address all possible safety issues. Users are responsible for taking appropriate safety and health measures and ensuring compliance with the conditions stipulated in relevant national regulations. This part of GB/T 20975 specifies the determination of tin content in aluminum and aluminum alloys by flame atomic absorption spectrometry and Na*EDTA titration. This section applies to the arbitration determination of the mid-range content of uranium and cladding alloys. Flame atomic absorption spectrometry measuring range: 0.020%% ~ 12.00%; Na EDTA titration measuring range: 3.00% ~ 22.00%%. Note: When the saw mass fraction exceeds 3.00%~12.00%, the NasEDTA titration method is used as the arbitration method.
GB/T 20975.17-2020 Referenced Document
GB/T 8005.2 Terms of aluminium and aluminium alloys—Part 2:Chemical analysis
GB/T 8170 Rules of rounding off for numerical values & expression and judgement of limiting values
GB/T 20975.17-2020 history
2020GB/T 20975.17-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 17: Determination of strontium content
2008GB/T 20975.17-2008 Methods for chemical analysis of aluminium and aluminium alloys.Part 17:Determination of strontium content.Flame atomic absorption spectrometric method
2001GB/T 6987.28-2001 Aluminium and aluminium alloys--Determination of strontium content--Flame atomic absorption spectrometric method