GB 31604.53-2022: Translated English of Chinese Standard (GB31604.53-2022): National food safety standard - Food contact materials and articles - Determination of migration of 5-Ethylidene-2-norbornene, mixt. of endo-and exo-isomers
https://www.chinesestandard.net, 21 ago 2022 - 14 pagine
This document specifies the method for the determination of the migration of 5-Ethylidene-2-norbornene in food contact materials and products. This document applies to the determination of the migration of 5-Ethylidene-2-norbornene in plastics, rubber, and coated food contact materials and products.
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5-Ethylidene-2-norbornene 0.10mg/L 5-Ethylidene-2-norbornene cis 5-Ethylidene-2-norbornene standard intermediate Abundance according Accurately acetic acid acidic and ethanol-containing analyte Annex area/volume ratio blank test solution brown glass container Calculate cap and seal chemical alternative solvent chromatogram of 5-Ethylidene-2-norbornene chromatography-mass spectrometry 5-Ethylidene-2-norbornene concentration of 5-Ethylidene-2-norbornene contact with food corresponding dark determine test solution deviation ethanol and isooctane ethanol by gas ethanol-containing food simulants Figure A.8 food contact materials gas chromatography-mass spectrometry headspace vial Immediately cap injection instrument reference conditions isomers Maintain for 3min mass spectrum materials and products method migration test month oil-containing food simulants olive oil peak area Qualitative ions m/z Quantitative ions Reagents reference conditions listed relative respectively seal for testing Selected ion chromatogram series of standard set volume Shake Shelf shown in Figure soaking solution solution of acidic specified specimen solution Split standard curve standard intermediate solution standard solution standard working solution Store temperature Transfer the solution volume fraction