Ferreira Nicole, Henriques Bruno, Viana Thainara, Carvalho Lina, Tavares Daniela, Pinto João, Jacinto Jéssica, Colónia João, Pereira Eduarda
LAQV-REQUIMTE - Associated Laboratory for Green Chemistry, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal.
LAQV-REQUIMTE - Associated Laboratory for Green Chemistry, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal.
Food Chem. 2023 Mar 15;404(Pt B):134669. doi: 10.1016/j.foodchem.2022.134669. Epub 2022 Oct 19.
To routinely assess whether consumed food meets international guidelines, a single analytical method able to quantify minerals and potentially toxic elements (PTEs) in real food matrices is required. This work validated a simple and efficient method to quantify nine elements in different food matrices by ICP-MS. Samples from local markets (chicken, mussels, fish, rice, and seaweed) and certified reference materials were digested with HNO 68 % and HO 30 %. All performance criteria (working range, linearity, LOD, LOQ, selectivity, repeatability, and trueness) met the requirements of the Portuguese Association of Accredited Laboratories. Comparison between raw and cooked food showed significant changes in most element levels, and PTEs contents complied with the maximum permissible values (EC N° 1881/2006). The minimum and maximum amounts of the foods studied, alone or in combination, raw or cooked, that can be daily consumed to meet EFSA and WHO nutritional and safety requirements were analysed.
为了定期评估所消费的食品是否符合国际准则，需要一种能够对实际食品基质中的矿物质和潜在有毒元素（PTEs）进行定量分析的单一分析方法。本研究验证了一种简单有效的电感耦合等离子体质谱法（ICP-MS），用于定量分析不同食品基质中的9种元素。采集当地市场的样品（鸡肉、贻贝、鱼类、大米和海藻）以及有证标准物质，用68%的硝酸（HNO₃）和30%的过氧化氢（H₂O₂）进行消解。所有性能指标（工作范围、线性、检测限、定量限、选择性、重复性和准确性）均符合葡萄牙认可实验室协会的要求。生食与熟食的对比结果表明，大多数元素含量发生了显著变化，且PTEs含量符合最大允许值（欧盟法规第1881/2006号）。分析了所研究的各类食品（单独或组合、生食或熟食）为满足欧洲食品安全局（EFSA）和世界卫生组织（WHO）的营养及安全要求而每日可食用的最小和最大量。
