3D hot spot construction on the hydrophobic interface with SERS tags for quantitative detection of pesticide residues on food surface

文献类型： 外文期刊

第一作者： Wang, Yan-Hui

作者： Wang, Yan-Hui;Huang, Chen;Wu, Xiao;Liu, Xiao-Feng;Wang, An;Jin, Shangzhong;Zhang, Fan-Li;You, En-Ming;Liu, Sheng-Hong

作者机构：

关键词： Surface-enhanced Raman scattering; 3D hot spots; Hydrophobic interface; Pesticide residues; Quantitative analysis

期刊名称：FOOD CHEMISTRY （ 影响因子：9.8； 五年影响因子：9.7 ）

ISSN： 0308-8146

年卷期： 2025 年 463 卷

页码：

收录情况： SCI

摘要： The overuse of pesticides results in excessive pesticide residues, posing a potential threat to human health. Herein, this work proposes a SERS substrate for the quantitative analysis of pesticide residues on food surfaces. Au cores are assembled on PS microspheres, followed by the modification of Raman internal standards (1,4-BDT) on the gold core surface and the growth of the Au shell. After incubating the analytes with PS@Au@1,4-BDT@Au particles, the mixture is dropped on the hydrophobic gold film for drying before detection. The SERS substrates exhibited high sensitivity and stability, with a detection limit of 10(-12) M and an RSD of less than 7 %. Combined with a portable Raman spectrometer, the SERS detection of pesticide residues on three kinds of food surfaces is carried out, with a sensitivity of 10(-11) M, meeting the US MRLs regulations. Therefore, this strategy may possess significant potential for future food safety.

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