This part of GB/T 20975 specifies the determination method of mercury content in aluminum and its aluminum alloys. This part applies to the determination of mercury content in aluminum and aluminum alloys. All coexisting elements in aluminum and aluminum alloys do not interfere with the determination of mercury. The measurement range of method 1 is: >0.000 1%~0.010%; the measurement range of method 2 is: 0.000 001%~0.000 1%.
GB/T 20975.1-2018 history
2020GB/T 20975.21-2020 Methods for chemical analysis of aluminium and aluminium alloy—Part 21: Determination of calcium content
2019GB/T 20975.31-2019 Methods for chemical analysis of aluminium and aluminium alloys—Part 31:Determination of phosphorus content—Molybdenum blue spectrophotometry
2018GB/T 20975.1-2018 Methods for chemical analysis of aluminium and aluminium alloys.Part 1:Determination of mercury content
2008GB/T 20975.21-2008 Methods for chemical analysis of aluminium and aluminium alloys.Part 21:Determination of calcium content.Flame atomic absorption spectrometric method
2007GB/T 20975.1-2007 Chemical analysis methods of aluminium and aluminium alloys Part 1: Determination of mercury content Cold atomic absorption spectrometric method
2001GB/T 6987.21-2001 Aluminium and aluminium alloys--Determination of calcium content--Fiame atomic absorption spectrometric method