基于 Au@Ag-TGANPs 的 SERS 用于液态奶中噻菌灵和福美双的简便筛选。
Au@Ag-TGANPs based SERS for facile screening of thiabendazole and ferbam in liquid milk.
机构信息
School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China; Academy of Contemporary Food Engineering, South China University of Technology, Guangzhou Higher Education Mega Center, Guangzhou 510006, China; Engineering and Technological Research Centre of Guangdong Province on Intelligent Sensing and Process Control of Cold Chain Foods, & Guangdong Province Engineering Laboratory for Intelligent Cold Chain Logistics Equipment for Agricultural Products, Guangzhou Higher Education Mega Centre, Guangzhou 510006, China.
School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China; Academy of Contemporary Food Engineering, South China University of Technology, Guangzhou Higher Education Mega Center, Guangzhou 510006, China; Engineering and Technological Research Centre of Guangdong Province on Intelligent Sensing and Process Control of Cold Chain Foods, & Guangdong Province Engineering Laboratory for Intelligent Cold Chain Logistics Equipment for Agricultural Products, Guangzhou Higher Education Mega Centre, Guangzhou 510006, China; Food Refrigeration and Computerized Food Technology (FRCFT), Agriculture and Food Science Centre, University College Dublin, National University of Ireland, Belfield, Dublin 4, Ireland.
出版信息
Spectrochim Acta A Mol Biomol Spectrosc. 2021 Jan 15;245:118908. doi: 10.1016/j.saa.2020.118908. Epub 2020 Sep 3.
Surface-enhanced Raman spectroscopy based on thioglycolic acid (TGA) functionalized silver-coated gold nanoparticles (Au@Ag-TGANPs) was developed for the facile screening of thiabendazole (TBZ) and ferbam (0.025-10 ppm) in liquid milk for the first time. Results showed that silver-coated gold nanoparticles (Au@AgNPs) with a core size of 32 nm and a shell thickness of 5 nm was successfully modified with 3 nm TGA. The sensitive Au@Ag-TGANPs could enhance TBZ and ferbam signals by factors of 6.4 × 10 and 9.8 × 10, respectively, and achieved the detection of TBZ and ferbam with limits of detection of 0.12 and 0.003 ppm, R of 0.988 and 0.9821, percent recoveries of 88-103% and of 87.2-103.5%, and relative standard deviations of 4.1-9.2% and 3.5-8.3%, respectively. The current simple and green method could thus be used to detect other unsafe chemicals in future studies.
基于巯基乙酸（TGA）功能化的银包金纳米粒子（Au@Ag-TGANPs）的表面增强拉曼光谱首次被开发用于液体牛奶中噻菌灵（TBZ）和福美双（0.025-10ppm）的简便筛选。结果表明，成功地将 32nm 核大小和 5nm 壳厚度的金纳米粒子（Au@AgNPs）修饰为 3nm 的 TGA。灵敏的 Au@Ag-TGANPs 可分别将 TBZ 和福美双的信号增强 6.4×10 和 9.8×10 倍，检测到 TBZ 和福美双的检出限分别为 0.12 和 0.003ppm，R 分别为 0.988 和 0.9821，回收率分别为 88-103%和 87.2-103.5%，相对标准偏差分别为 4.1-9.2%和 3.5-8.3%。因此，这种简单绿色的方法可以在未来的研究中用于检测其他不安全的化学物质。
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