消费者和食品包装样本中化化合物的总和特定类别的确定使用-19固态核磁共振光谱法
Mike Thijs1, Ernest Laletas2, Caitlin M Quinn3
1Solenis Belgium BVBA, Global Technology, Nijverheidsstraat 98, 2160 Wommelgem, Belgium.
Analytical chemistry
|May 8, 2024
概括
-19固态NMR光谱直接检测食品包装中的和多基物质 (PFAS),为当前的方法提供了补充的方法. 这种技术通过区分有机和无机源来提高准确性.
科学领域:
- 分析化学 分析化学
- 材料科学 材料科学 材料科学
背景情况:
- 食品包装经常使用含有per-和多甲基物质 (PFAS) 的水基屏障涂层.
- 在食品包装中精确检测PFAS对于消费者安全和监管合规至关重要.
- 现有的方法,如全有机 (TOF),由于依赖提取工艺,可能会产生不准确的结果.
研究的目的:
- 评估-19固态核磁共振 (FSS-NMR) 光谱仪在食品包装中直接检测PFAS的疗效.
- 为了比较Fss-NMR与传统方法,如TOF用于PFAS分析.
- 优化Fss-NMR以提高检测低度PFAS的灵敏度.
主要方法:
- 使用全有机 (TOF) 和Fss-NMR光谱学分析汉堡包装纸.
- 使用Fss-NMR来区分有机 (PFAS) 和无机来源.
- 实验条件系统地变化,以改善PFAS的检测极限.
主要成果:
- 美国FSS-NMR光谱学成功地区分了天然存在的无机和加酸 (PFAS).
- 该研究探讨了在10-20 mg/kg度下提高PFAS检测灵敏度的条件.
- 尽管检测极限和分辨率受到限制,Fss-NMR证明能够直接识别PFAS.
结论:
- Fss-NMR光谱是一种可行的工具,用于在食品和消费者包装中直接检测PFAS.
- 该方法为现有技术提供了有价值的替代方案和补充,提供了PFAS小组的直接证据.
- 通过消除复杂的样本清理程序的需要,Fss-NMR提高了分析准确性.
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