文献类型： 外文期刊

作者： Wang, Yan-Hui ¹ ; Huang, Chen ¹ ; Wu, Xiao ¹ ; Liu, Xiao-Feng ¹ ; You, En-Ming ² ; Liu, Sheng-Hong ³ ; Wang, An ¹ ; Jin, Shangzhong ¹ ; Zhang, Fan-Li ¹ ;

作者机构： 1.China Jiliang Univ, Coll Opt & Elect Technol, Hangzhou 310018, Peoples R China

2.Jimei Univ, Sch Ocean Informat Engn, Xiamen 361021, Peoples R China

3.Xinjiang Acad Agr Sci, Inst Agr Qual Stand & Testing Technol, Urumqi 830091, Peoples R China

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.