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 migrationhttps://www.chinesestandard.net, 17 avr. 2021 - 11 pages 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. |
Table des matières
| 3 | |
Instruments and equipment | 5 |
Analysis steps | 6 |
Expression of analysis results | 8 |
Precision | 9 |
Annex A Reference mass spectrometry conditions | 10 |
Annex B MRM chromatogram of nonylphenol standard working solution | 11 |
Expressions et termes fréquents
0.40mL of standard 10mL volumetric flasks 5min acetic acid solution acetonitrile actual ammonia analyte Annex blank solution Centrifuge at 10000r/min chemical alternative solvents chemical substitute solvent concentrations are 0.01mg/L contact area corresponding determination of nonylphenol determine the injected deviation difference ethanol solution follows food contact materials food simulant soaking getting graduation of scale injected sample instrument reference conditions intermediate solution 5mg/L isooctane kilogram mg/kg Liquid chromatography machine mass concentrations mass spectrometry conditions materials and articles method migration test milligrams per kilogram mode needs obtained by migration obtained from migration olive oil Preparation processed synchronously qualitative determination ratio Reagents reference conditions listed sealing products set volume significant digits simulant soaking solution 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 temperature test solution Treatment volume fraction Vortex