This standard specifies the method for the determination of zinc in food. This standard applies to the determination of zinc in food. The detection limit of this method: atomic absorption method is 0.4mg/kg; dithizone colorimetric method is 2.5mg/kg.
GB/T 5009.14-2003 history
2017GB 5009.14-2017 National Food Safety Standard Determination of Zinc in Food