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See Chinese contents: GB 5009.267-2020 GB 5009.267-2020: National food safety standard - Determination of Iodine in foods
This standard specifies the determination method of iodine content in food. The method 1 Inductively coupled plasma mass spectrometry is suitable for the determination of iodine in food. The method 2 Redox titration is suitable for the determination of iodine in algae and its products. The method 3 Arsenic-cerium catalytic spectrophotometry is suitable for the determination of iodine in food, vegetables, fruits, beans and their products, milk and their products, meat, fish and eggs.
