GB 5009.253-2016 National Food Safety Standard - Comprehensive Scheme for Determination of Perfluorinated Compounds of Animal Origin:

This scheme mainly uses acetonitrile extraction. First, a dispersed ProElut Carb purification tube is used for preliminary purification. After dilution with purified water, a ProElut PWA-2 weak anion exchange SPE column is used for secondary purification. The dilution method is adopted to reduce the impact of nitrogen blowing on the target substance, while saving time and ensuring recovery rate. Using Dema Technology's Endeavorsil C18100x2.1mm, 1.8 μ m (Cat. #: 87003) chromatographic column for separation and detection, the recovery rate is between 70-120%, meeting the detection requirements.