The lubricant(oleamide)in the plastic bottle caps is a hot topic of consumer concern.Based on the contents of oleic acid amide in polyethylene bottle caps,the migration rules of oleic acid amide in the polyethylene bottle caps were analyzed.In the food simulated liquids,when the migration time was 10 d,the migration rules of oleic acid amide in polyethylene bottle caps were determined by gas chromatography-mass spectrometry(GC-MS)under different temperatures and ethanol volume fractions.The results show that,under the same migration time and temperature,the polyethylene bottle caps exhibit the highest migration amount of oleamide in a 95%ethanol simulation solution.With the same food simulation solution and migration time,the higher the temperature,the greater the migration amount of oleamide.When the migration experiment time is 10 d,the migration amount of oleic acid amide increases with the increase of ethanol volume fraction or experimental temperature.Therefore,the ethanol volume fraction and migration temperature have important effects on the migrations of oleic acid amide in the polyethylene bottle caps.
关键词
气相色谱质-谱联用仪/聚乙烯瓶盖/迁移规律/油酸酰胺
Key words
Gas Chromatography-Mass Spectrometry/Polyethylene Bottle Cap/Migration Rule/Oleamide
维普
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