Result Analysis on Determination of Phthalate Acid Esters in Foods and Plastic Food Packaging Materials by HPLC-MS/MS

[Objective]To investigate the contamination of five kinds of Phthalate Acid Esters(PAEs)in foods and food packaging materials,analyze the results.[Methods]485 food samples and 102 food packaging material samples were collected randomly from various super-markets and stores by statistical method.After classifying with types and packaging methods,the samples determined by High Performance Liquid Chromatography Tandem Mass Spectrometric method(HPLC-MS/MS),and the results were analyzed statistically.[Results]PAEs were detected in 485 food samples universally,detection rate was 53.2% with content range of 0.01～13 960 mg/kg.The content order of five kinds of PAEs in foods was DEHPDBPDEPDOPDMP.The PAEs level of foods using plastic packaging materials was higher than that using no-plastic packaging materials.Spearman correlation analysis demonstrated that there was positive correlation on contents of DBP,DOP and DEHP between foods and packaging materials,the correlation coefficient of DBP and DEHP was 0.989,and the correlation relationship of DMP and DEP was not significant(P0.05).The PAEs level in fat-rich foods was high.[Conclusion]The contamination of PAEs in foods comes from food packaging materials mainly.High temperature and high lipid will increase dissolution of PAEs from food packaging materials.The results show the contamination of PAEs in food is serious,and related departments should paid attention on it.