聚丙烯食品保鲜盒中纳米银迁移研究

目的]研究不同因素对聚丙烯食品保鲜盒中纳米银迁移的影响。方法]采用电镜、马尔文粒度分布仪在不同的浸泡基质、时间和温度下对聚丙烯保鲜盒中纳米银的形态和大小分布进行研究,采用电感耦合等离子质谱法(ICP-MS)测定保鲜盒中纳米银的含量。结果]聚丙烯保鲜盒中的纳米银在3种不同的浸泡基质(水、4%乙酸、正己烷)中均有一定的迁移量,其中在模拟油类浸泡液中检测到的纳米银含量最高,其次依次为在酸类和水类模拟液中;在相同的浸泡液条件下,保鲜盒中纳米银的迁出浓度与浸泡时间、反应温度均呈正相关。结论]该研究可为控制食品接触材料中纳米成分的释放对人体的危害和环境的影响提供参考。

Migration of Silver Nanoparticles in Polypropylene Food Packaging Materials

Objective ] To research the effects of different factors on the migration of silver nanoparticles in polypropylene food packaging materials. Method] Electron microscopy and Malvern particle size analyzer were used to study the shape and size distribution of nano-silver in polypropylene crisper at different immersion matrix, time and temperature.The content of nano-silver in crisper was detected by ICP-MS.Re-sult] Nano-silver in polypropylene crisper had a certain amount of migration in three different immersion matrix ( water, 4% acetic acid and n-hexane), content of nano-silver in the simulation of oil soaking liquid was the highest, followed by acids and water class simulation solution.Un-der the same soaking solution conditions , the migrations of nano-silver in crisper were positively correlated with the immersion time and reaction temperature.Conclusion] This research provides references for the effects of the control of nano-ingredients release in food contact materials on the human health and environment .