GB 31604.35-2016: Translated English of Chinese Standard. GB31604.35-2016: National food safety standard - Food contact materials and products - Determination of caprolactam and migration quantity
https://www.chinesestandard.net, 23.4.2018 - 11 sivua
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.
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Instruments and equipment
Expression of the analytic result
Appendix A Chromatogram
0.385g of ammonium accelerate solvent extraction Acetic acid Acetonitrile ammonia caprylic acid PFOA Chromatographic purity chromatography-tandem mass spectrometer concentration of 100ng/mL concentration of PFOS conditions for liquid Determination of perfluorooctane deviation of relative dilute with methanol Electrospray Ionization environment of 4°C food contact materials GB/T Gradient elution conditions grind into powder internal standard mixed Ion source isotope internal standard liquid chromatography liquid chromatography-tandem mass liquid nitrogen frozen mass chromatographic peak materials and products Maximum allowable deviation Mixed standard storage mixed working solution mL of methanol mmol/L ammonium acetate MPFOA MPFOS ng/g nitrogen frozen grinder perfluoro caprylic acid perfluorooctane sulfonate PFOS Perfluorooctanoic acid PFOA and Isotope PFOA in food PFOS and PFOA PFOS or PFOA phase extraction column powder by liquid purification Reagents Relative ion abundance sample solution solid phase extraction solution of PFOS standard curve standard solution standard storage solution standard substances standard working solution temperature volumetric flask weak anion exchange