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See Chinese contents: GB 5009.14-2017 GB 5009.14-2017: Food safety national standard -- Determination of Zinc in Food
This Standard specifies the flame atomic absorption spectrometry method, the inductively coupled plasma emission spectroscopy method, the inductively coupled plasma mass spectrometry method and the dithizone colorimetric method in the determination of zinc in foods. This Standard is applicable to the determination of zinc in foods, irrespective of materials.
