食用油及其加热产物中酞酸酯类增塑剂的分析

Determination of Phthalic Acid Ester in Edible Oil and the Condensate of Its Fume

[目的 ]了解食用油和厨房油烟冷凝物中酞酸酯类增塑剂的含量。 [方法 ]采用毛细管柱气相色谱 质谱联用仪 (GC/MS)的选择离子监测方式 (SIM)对样品检测。 [结果 ]食用油中邻苯二甲酸二丁酯 (di n butylphthalate ,DBP)和邻苯二甲酸二辛酯 (di n octylphthalate ,DOP)的最高含量分别为 2 98mg/L和 2 4 16mg/L ,厨房油烟冷凝物中DBP和DOP最高含量分别为 13 3 70mg/L和 2 2 2 0 5mg/L ,全程回收率 :DBP为 90 1%～ 10 3 3 % ,DOP为 92 1%～ 10 2 2 %。 [结论 ]食用油包装材料中的增塑剂会溶移到食用油中。

To study the content of phthalic acid ester in edible oil wrapped up in plastic container and the condensate of its fume. The Selective Ion Monitoring Mode of GC/MS was used. The maximum level of di n butyl phthalate(DBP) and di n octyl phthalate(DOP) in edible oil is 2 98 ml/L and 24 16 mg/L,respectively,the maximum level of DBP and DOP in the condensate of edible oil fume is 133 70 mg/L and 222 05 mg/L,respectively,the recovery of DBP is from 90 1% to 103 3%,the recovery of DOP is from 92 1% to 102 2%. [Conclusion] Plasticizer in the wrapping of food will be dissolved and transferred into edible oil,therefore its necessary to conduct safety evaluation and establish the allowable maximum concentration in food.