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目的检测两种萃取溶剂对塑料食品包装材料上有机污染物检测效果的影响。方法分别以正己烷和无水乙醇为萃取溶剂对塑料食品包装材料上污染物进行超声提取,提取后用旋转蒸发浓缩,最后采用气相色谱-质谱联机(GC-MS)分析方法以离子化方式对浓缩的污染物进行表征。结果正己烷作为萃取溶剂能萃取出抗氧化剂2,6-二叔丁基对甲酚、增塑剂邻苯二甲酸二丁酯、油墨生产中所用的溶剂正十六烷;乙醇作为萃取溶剂能萃取出抗氧化剂2,6-二叔丁基对甲酚、油墨生产中所用的溶剂正十六烷和正二十烷。结论正己烷作为萃取溶剂的提取效果要比乙醇作为萃取溶剂提取效果好。
Objective To determine the effect of two extraction solvents on the detection of organic pollutants in plastic food packaging materials. Methods The contaminants on plastic food packaging materials were extracted by n-hexane and ethanol respectively. After extraction, the contaminants were concentrated by rotary evaporation. Finally, by GC-MS, Concentrated contaminants were characterized. Results n-Hexane as an extraction solvent can extract antioxidant 2,6-di-tert-butyl-p-cresol, plasticizer dibutyl phthalate, the solvent used in the production of n-hexadecane; ethanol as an extraction solvent can The antioxidant 2,6-di-tert-butyl-p-cresol was extracted and the solvents n-hexadecane and n-eicosane used in the ink production were extracted. Conclusion The extraction of n-hexane as extraction solvent is better than that of ethanol as extraction solvent.