Analytical Chemistry Section, Faculty of Chemistry, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain.
Molecules. 2023 Oct 19;28(20):7166. doi: 10.3390/molecules28207166.
A novel strategy to assess the main variables that potentially affect the migration of antimony from PET bottles to beverages, including mineral waters and juices, is herein proposed. In a preliminary step, an LC-ICP-MS method previously used for water analysis was optimized to correct identify Sb species present in the studied matrices using HRMS. Subsequently, the influence of temperature and storage time up to 30 days on Sb migration from PET bottles into peach and pineapple juices of the same brand was studied. Storing PET bottled drinks at elevated temperatures (i.e., in a hot car or in summer) can cause antimony migration to exceed the limits allowed in the EU or USA. Because the behavior observed differed from the results reported for Sb migration in mineral waters, a second approach was proposed: three mineral water and two juice samples were kept in different PET containers and stored at an elevated temperature (up to 60 °C) to understand the role of the PET type and matrix simultaneously. This study demonstrated that both matrix characteristics and type of PET bottle greatly influence antimony leaching, highlighting the need to consider these variables together when conducting migration experiments. The obtained results can be helpful for developing future legislation concerning migration of pollutants from packing to food commodities.
本文提出了一种新策略，用于评估可能影响从 PET 瓶到饮料（包括矿泉水和果汁）中锑迁移的主要变量。在初步步骤中，优化了先前用于水分析的 LC-ICP-MS 方法，以使用高分辨率质谱（HRMS）校正识别研究基质中存在的 Sb 物种。随后，研究了温度和储存时间（长达 30 天）对同一品牌的桃汁和菠萝汁中 PET 瓶锑迁移的影响。将 PET 瓶装饮料存放在高温下（例如在炎热的汽车或夏季）可能导致锑迁移超过欧盟或美国允许的限量。由于观察到的行为与矿泉水中亚锑迁移的报道结果不同，因此提出了第二种方法：将三种矿泉水和两种果汁样品分别存放在不同的 PET 容器中，并在高温（高达 60°C）下储存，以同时了解 PET 类型和基质的作用。本研究表明，基质特性和 PET 瓶类型都会极大地影响锑的浸出，这凸显了在进行迁移实验时需要同时考虑这些变量的必要性。获得的结果有助于制定有关污染物从包装到食品商品迁移的未来法规。
