Huang Zhongping, Zhang Junhao, Pan Baoquan, Fan Yilei, Xu Shiyun, Liu Huijun, Wang Keke
College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China; Ningbo Academy of Product and Food Quality Inspection (Ningbo Fiber Inspection Institute), Ningbo 315048, China.
College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China.
Food Chem. 2025 Apr 30;472:142934. doi: 10.1016/j.foodchem.2025.142934. Epub 2025 Jan 17.
In this study, a pyrolysis-gas chromatography/mass spectrometry method was established to quantify microplastics (MPs) released from plastic food containers during rinsing and migration. The inner surface of actual samples was rinsed with deionized water, and the MPs in rinse water were collected through a glass fiber membrane with pore size of 1 μm. Subsequently, thoroughly cleaned polypropylene (PP) food packaging containers were selected for migration tests under different simulants, migration temperatures, and migration times. It was found that MPs corresponding to the materials of product manufacture were detected in all collected containers during rinsing. By migration tests, the results showed that high-fat foods, high/low temperature (5 °C), and long exposure periods can promote the release of MPs. It was also proved that the migration of MPs from plastic food containers was one of the important sources for human exposure to MPs. The obtained results can provide evidence for the safety risk assessment of plastic food containers.
在本研究中，建立了一种热解气相色谱/质谱法，用于定量塑料食品容器在冲洗和迁移过程中释放的微塑料（MPs）。用去离子水冲洗实际样品的内表面，并通过孔径为1μm的玻璃纤维膜收集冲洗水中的微塑料。随后，选择经过彻底清洁的聚丙烯（PP）食品包装容器，在不同的模拟物、迁移温度和迁移时间下进行迁移试验。结果发现，在冲洗过程中，所有收集到的容器中都检测到了与产品制造材料相对应的微塑料。通过迁移试验，结果表明高脂肪食品、高/低温（5℃）和长时间暴露会促进微塑料的释放。还证明了塑料食品容器中微塑料的迁移是人类接触微塑料的重要来源之一。所得结果可为塑料食品容器的安全风险评估提供依据。
