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
2018GB/T 20975.1-2018 Methods for chemical analysis of aluminium and aluminium alloys.Part 1:Determination of mercury content
2007GB/T 20975.1-2007 Chemical analysis methods of aluminium and aluminium alloys Part 1: Determination of mercury content Cold atomic absorption spectrometric method