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See Chinese contents: GB/T 5009.14-2003 GB/T 5009.14-2003: Determination of zinc in foods
This Standard specifies the methods for the determination of zinc in foods. This Standard applies to the determination of zinc in foods. The detection limits of this Standard: for atomic absorption method, it is 0.4 mg/kg; for dithizone colorimetry method, it is 2.5 mg/kg.
