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GB/T 6730.37-1986
Methods for chemical analysis of iron ores--The 4-［(5-chloro-2-phridyl)azo］-1，3-diaminobenzene photometric method for the determination of cobalt content
GB/T 6730.29-1986
Methods for chemical analysisof iron ores--The barium sulfate gravimetric method for the determination of barium content
GB/T 6730.27-1986
Methods for chemical analysis of iron ores--The lanthanum-alizarin complexon photometric method for the determination of fluorine content
GB/T 6730.26-1986
Methods for chemical analysisof iron ores--The thorium nitrate volumetric method for the determination of fluorine content
GB/T 3714-1983
Technical requirements of manganese carbonate orepowder