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See Chinese contents: GB 5009.158-2016 GB 5009.158-2016: National Food Safety Standard -- Determination of Vitamin K1 in Foods
This Standard specifies the method of determining vitamin K1 in foods. In this Standard, Method I is high-performance liquid phase chromatography - fluorescence detection, Method II is liquid phase chromatography - tandem mass spectrometry, which are both applicable to the determination of vitamin K1 in all kinds of formula food, vegetable oil, fruit and vegetable.
