PC 制品中双酚 A 定量分析方法的研究

目的研究双酚A在水、乙醇(质量分数为65%,全文同)、乙酸(4%)等3种食品模拟物中的迁移行为,探讨温度对双酚A迁移行为的影响,进而建立检测聚碳酸酯(PC)制品中双酚A向食品模拟物迁移溶出的定量分析方法。方法采用溶剂萃取法提取食品模拟物中的双酚A,并用GC-MS进行迁移量测定。结果该方法的工作曲线在0.05~200 mg/L范围内线性关系良好(r=0.9997),检出限为0.02 mg/L,检测方法灵敏,精确度较高。双酚A在3种模拟液中的检出量大小顺序为乙醇(65%)水乙酸(4%)。结论双酚A在同一食品介质中的迁移量随温度的升高呈上升趋势,且向水和酒精类食品的迁移比向酸性食品的迁移显著。

Quantitative Analysis Method of Bisphenol A in PC Products

Objective To establish quantitative analysis method of bisphenol A migrated from polycarbonate ( PC) products to food based on its migration behavior in dissolution media of water, 65% ethanol or 4% acetic acid, as influenced by temperature changes. Methods The solvent extraction method was employed to extract bpa migrated into the dissolution medium, and GC-MS was used to determine the migration amount. Results The GC-MS method established was sensitive with satisfying precision in the test curve range of 0. 05 ~ 200 mg / L ( r = 0. 9997) with a detection limit of 0. 02 mg / L. The detectable quantity of BPA in the dissolution medium reduced in the order of 65% ethanol, water and 4% acetic acid. Conclusion Migration of BPA increased in the same dissolution medium as the temperature increased, and its migration to the dissolution medium of water and ethanol was significantly higher than that of acetic acid.