GB 31604.27-2016: Translated English of Chinese Standard. GB31604.27-2016: National Food Safety Standard - Food contact materials and products - Determination of ethylene oxide and epoxy propane in plastics
https://www.chinesestandard.net, 5 Μαΐ 2018 - 18 σελίδες
This standard specifies the methods of determination of ethylene oxide and epoxy propane in food contact materials and products. This standard is applicable to the determination of ethylene oxide and epoxy propane in plastic food contact materials and products.
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10mL volumetric flask 50 mg precision 5mL of DMAC arithmetic mean concentration of 1mg/mL concentration of ethylene Determination of ethylene diethyl ether internal dissolve with DMAC DMAC and put Draw with graduated epoxy propane standard ether internal standard Food contact materials gas chromatography-mass spectrometry graduated pipette granted the standard headspace bottles respectively headspace gas chromatography-mass Headspace sampler condition internal standard intermediate internal standard reserve mechanical oscillator meter the volume Meter with DMAC mixed standard intermediate oscillate the headspace oxide and epoxy oxide or epoxy oxide or propylene oxide standard reserve polytetrafluoroethylene propane in plastics propane standard reserve propylene oxide qualitative ions Reagents reserve solution Weigh sample mass sample solution soluble in DMAC solution of ethylene solution Weigh 50 solution with concentration standard addition method standard curve standard intermediate solution standard reserve solution standard substance certificate storage condition substance certified unit is milligram volume to 50 volumetric flasks respectively Weigh 50 mg