This part of GB/T 5070 specifies the method for the determination of manganese oxide by flame atomic absorption spectrometry. This section applies to the determination of the amount of manganese oxide in magnesia-chrome refractories. The measurement range (mass fraction) is 0.01% to 0.50%.
GB/T 5070.11-2002 history
2015GB/T 5070-2015 Chemical analysis of refractories containing chrome
2007GB/T 5070-2007 Chemical analysis of refractories containing chrome
2002GB/T 5070.11-2002 Chemical analysis of magnesia chromite refractories--Part 11: Determination of manganese oxide--Atomic absorption spectrophotometric method
GB/T 5070.11-2002 Chemical analysis of magnesia chromite refractories--Part 11: Determination of manganese oxide--Atomic absorption spectrophotometric method was changed to GB/T 5070-2007 Chemical analysis of refractories containing chrome.