GB 31604.50-2020 Translated English of Chinese Standard. (GB 31604.50-2020, GB31604.50-2020): National food safety standard - Food contact materials and articles - Determination of nonylphenol migration
https://www.chinesestandard.net, 17/04/2021 - 11 من الصفحات
This Standard specifies the liquid chromatography-mass spectrometry/mass spectrometry method for nonylphenol migration of food contact materials and articles. This Standard is applicable to the determination of nonylphenol of food contact materials and products with water, 4% (volume fraction) acetic acid solution, 10% (volume fraction) ethanol solution, 20% (volume fraction) ethanol solution, 50% (volume fraction) ethanol solution, olive oil, 95% (volume fraction) ethanol solution as food simulant OR the determination of nonylphenol in the soaking solution obtained by using 95% (volume fraction) ethanol solution, isooctane chemical substitute solvent in a migration test.
Instruments and equipment
Expression of analysis results
Annex A Reference mass spectrometry conditions
Annex B MRM chromatogram of nonylphenol standard working solution
0.40mL of standard 10mL volumetric flasks 5min acetic acid solution acetonitrile acid soaking solution ammonia blank solution Centrifuge at 10000r/min chemical alternative solvents chemical substitute solvent chromatographically pure concentrations are 0.01mg/L contact area determination of nonylphenol determine the injected dilute and set electrospray ethanol solution food contact materials food simulant soaking graduation of scale injected sample instrument reference conditions intermediate solution 5mg/L isooctane soaking solution kilogram mg/kg Liquid chromatography listed in 5.2 mass concentrations mass spectrometer parameters mass spectrometry conditions materials and articles methanol to dilute migration test milligrams per kilogram N-hexane nonylphenol standard obtained by migration obtained from migration olive oil processed synchronously qualitative determination Reagents reference conditions listed sealing products set volume simulant soaking solution simulants and chemical six 10mL volumetric soaking solution obtained soaking solution Pipette solution in accordance specific nonylphenol migration standard curve standard intermediate solution standard solution standard working solution supernatant Table A.1 test solution volume fraction