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See Chinese contents: GB 31604.35-2016 GB 31604.35-2016: Determination of perfluorooctane sulfonates (PFOS) in the food packaging materials -- High performance liquid chromatography-tandem mass spectrometry
This standard specifies the method for the determination of perfluorooctane sulfonate (PFOS) and perfluorooctanoic acid (PFOAA) in food contact materials and products by tandem mass spectrometry. This standard is applicable to the determination of PFOS and PFOA in food contact materials and products such as carton, rubber, polyethylene, plastics, resin, non-stick pan coating and so on.
