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See Chinese contents: GB/T 6730.55-2019 GB/T 6730.55-2019: Iron ores -- Determination of tin content -- Flame atomic absorption spectrometric method
This Part of GB/T 6730 specifies the flame atomic absorption spectrometric method for the determination of the mass fraction in iron ores. This Part applies to mass fractions of tin between 0.001% and 0.015% in natural ores, iron ore concentrates and agglomerates, including sinter products.
