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See Chinese contents: GB/T 5009.90-2003 GB/T 5009.90-2003: Determination of iron, magnesium and manganese in foods
This Standard specifies the determination of iron, magnesium and manganese in foods through atomic absorption spectrophotometric method. This Standard is applicable to the determination of the iron, magnesium and manganese in various foods. The detection limit of this method: 0.2ug/mL for iron, 0.05ug/mL for magnesium, and 0.1ug/mL for manganese.
