Development of a new matrix-certified reference material for accurate measurement of PFOA and PFOS in oyster meat powder

文献类型： 外文期刊

第一作者： Zhou, Jian

作者： Zhou, Jian;Yan, Jingjing;Qi, Xin;Wang, Min;Yang, Mengrui

作者机构：

关键词： PFOA and PFOS; Oyster meat powder; Certified reference materials; Homogeneity and stability assessment; Uncertainty evaluation

期刊名称：MICROCHEMICAL JOURNAL （ 影响因子：4.8； 五年影响因子：4.5 ）

ISSN： 0026-265X

年卷期： 2023 年 190 卷

页码：

收录情况： SCI

摘要： Bioaccumulation of PFOA and PFOS in aquatic organisms is increasingly a global environmental problem. The development of biota matrix certified reference materials (CRMs) for PFOA and PFOS is urgently needed to cope with food safety supervision by assuring accurate analysis results. This paper addresses this urgent need by developing a new oyster matrix CRM of PFOA and PFOS; the certified values and expanded uncertainties are 5.63 +/- 0.35 and 3.08 +/- 0.20 mu g/kg. The CRM candidates were prepared by adding PFOA and PFOS into raw oyster meats, followed by freeze-drying, grinding, blending, homogenizing, bottling, and gamma-irradiation. The sample pretreatment strategy of extraction and clean-up was optimized to minimize matrix effects and interferences. The isotope dilution high-performance liquid chromatography-tandem mass spectrometry (ID-LCMS/MS) strategies were employed for certification, homogeneity, and stability assessment. In addition, uncertainties were evaluated by combining the contributions from characterization, homogeneity, and stability.

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