气相色谱-质谱法测定食品模拟物中全氟正丙基乙烯基醚的迁移量

Determination of migration of perfluoro propyl vinyl ether in food simulants by gas chromatography-mass spectrometry

中文关键词:  食品接触材料  全氟正丙基乙烯基醚  气相色谱-串联质谱法  迁移量

英文关键词:food contact material  perfluoro propyl vinyl ether  gas chromatography-mass spectrometry  migration

中文摘要:

      目的 建立一种顶空进样-气相色谱-质谱联用法测定各类食品模拟物(酸性、醇类、油性等)中全氟正丙基乙烯基醚的迁移量。方法 浸泡液中全氟正丙基乙烯基醚通过顶空进样的方式(顶空瓶中样品在80 ℃温度下平衡30 min)进入气相色谱柱, 经过键合苯乙烯-二乙烯基苯多孔高聚物的毛细管柱分离后由质谱检测分析(质荷比69作为定量离子)。结果 在优化的色谱柱、顶空平衡时间与温度等仪器条件下, 本方法最低检出限达到0.01 mg/kg, 回收率在86.5%~112.0%之间, 相对标准偏差小于10%(n=6)。结论 该方法操作简单, 灵敏度高, 适合测定各类食品模拟物中全氟正丙基乙烯基醚迁移量。

英文摘要:

      Objective To establish a method for determination of the migration of perfluoro propyl vinyl ether (PPVE) in various food simulants (acidity, alcohols, oils, etc) by headspace sampling-gas chromatography-mass spectrometry. Methods PPVE in soak liquid got into the gas chromatography column by headspace sampling (top empty bottle samples at 80 ℃ temperature balanced in 30 min). After capillary column separation of bonded styrene-divinyl benzene porous polymer, it was analyzed by mass spectrometry (mass to charge ratio 69 as quantitative ion). Results Under the optimized conditions, the limit of detection reached 0.01 mg/kg, the recovery rate ranged from 86.5% to 112.0%, and the relative standard deviation was less than 10% (n=6). Conclusion The proposed method shows a good sensitivity and accuracy, which is suitable for determining migration of PPVE in food simulants.