摘要
目的了解塑料食品包装中18种邻苯二甲酸酯的含量现状。方法选取280批不同材质的塑料食品包装,依据GB/T 21928—2008《食品塑料包装材料中邻苯二甲酸酯的测定》采用气相色谱-质谱法进行检测。以正己烷为提取溶剂,超声波提取,采用HP-5MS石英毛细管柱(30 m×0.25 mm,0.25μm)色谱柱程序升温分离,以保留时间和特征离子为定性依据,外标法定量。结果 62批聚氯乙烯材质的食品包装中18种邻苯二甲酸酯含量95%小于法规限量,82批复合材质和136批其它材质的食品包装中18种邻苯二甲酸酯含量100%小于法规限量,检出最多的是邻苯二甲酸二(2-乙基)己酯,3批聚氯乙烯材质的食品包装中邻苯二甲酸二(2-乙基)己酯严重超标。结论塑料食品包装中邻苯二甲酸酯暴露水平较低,聚氯乙烯材质存在的潜在危害较大,应引起重视,加强监管。
Objective To understand the situation of 18 kinds of phthalic acid esters in plastic food packaging.Methods The contents of phthalic acid esters in 280 plastic food packaging of different materials were analyzed by gas chromatography-mass spectrometry（GC-MS） following standard GB/T 21928-2008.The samples were extracted ultrasonically with n-hexane,then separated by HP-5MS capillary column and detected by single quadrupole mass spectrometry.Retention time and characteristic ions were used as qualitative evidence,and external standard was used for quantification.Results The content of 18 kinds of phthalate in 95% of the 62 batches of PVC materials were qualified,all 82 batches of composite materials and 136 batches of other materials were qualified.Diethylhexylphthalate residues were detected,and seriously exceeded the standard limit in 3 polyvinyl chloride materials.Conclusion The phthalic acid esters exposure from plastic food packaging was low,while polyvinyl chloride materials put a potential health risk to human.Regulation and monitoring on phthalic acid esters in plastic food packaging should be strengthened.
出处
《中国食品卫生杂志》
北大核心
2013年第4期355-358,共4页
Chinese Journal of Food Hygiene
基金
国家质检总局应用科学类科研项目(2010IK198)
国家质检总局应用科学类科研项目(2011IK262)
