GB 31604.44-2016 Translated English of Chinese Standard. GB31604.44-2016: National Food Safety Standard - Food contact materials and articles - Determination of migration of ethylene glycol and diethylene glycol
https://www.chinesestandard.net, 2018 M02 11 - 10 pages
This Standard specifies the gas chromatographic method for the determination of migration of ethylene glycol and diethylene glycol in food contact materials and articles. This Standard applies to the determination of migration of ethylene glycol and diethylene glycol in food contact materials and articles.
Expression of analytical results
Annex A Chromatogram of ethylene glycol or diethylene glycol in the standard working solutions of food simulants
100 mL volumetric absorb 2 mL accurate to 0.1 accurately absorb Accurately weigh 50 acidic and alcoholic add methyl alcohol add water dropwise alcoholic food simulants Analytical area of ethylene base food simulants chromatogram of ethylene chromatographic column concentrations of ethylene dark place Determination of migration diethylene glycol 0.0 diethylene glycol 30 dissolve before transferring dropwise to scale ethylene glycol 30 flame ionization detector Food contact materials food simulants Accurately food simulants once gas chromatographic GB/T glycol 30 mg/L glycol and diethylene glycol in food glycol or diethylene internal standard substance materials and articles methyl alcohol dropwise migration of ethylene migration test mL of 1,4-butanediol mL of water mL volumetric flask oil-base food simulants oscillation extraction Preparation of standard Reagents Sample injection sealed and stored simulants Accurately weigh solution of ethylene specified in GB Standard chromatogram standard intermediate solutions standard working solutions stock solution Take 1 mL water for oscillation water-base