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See Chinese contents: GB/T 1506-2016 GB/T 1506-2016: Manganese ores -- Determination of manganese content -- Potentiometric method and ammonium iron (Ⅱ) sulphate titrimetric method
This standard specifies the determination of manganese in manganese ore by potentiometric method and ammonium iron (II) sulphate titrimetric method. This standard is applicable to the determination of manganese content in manganese ore and manganese concentrates with vanadium content (mass fraction) not more than 0.05%, the determination range (mass fraction) is as follows: manganese content of potentiometric titration 15.00%; manganese content of ammonium iron (II) sulphate titrimetric method is 8.00% ~ 60.00%.
