☆ 4.7 Article

Silver microspheres aggregation-induced Raman enhanced scattering used for rapid detection of carbendazim in Chinese tea

FOOD CHEMISTRY (2021)

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FOOD CHEMISTRY
卷 339, 期 -, 页码 -

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ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2020.128085

关键词

Surface-enhanced Raman scattering (SERS); Ag microparticles; Detection of carbendazim

类别

Chemistry, Applied Food Science & Technology Nutrition & Dietetics

资金

  1. National Natural Science Foundation of China [31771088, 31170961, 81971736]
  2. Biomedical and Engineering Multidisciplinary Funding of SJTU [YG2017MS58, YG2019QNB22]

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This study demonstrated an easy-prepared and low-cost surface enhanced Raman Scattering (SERS) chip for the quantitative testing of carbendazim in Chinese tea, which offers more aggregation-induced hotspots, strong 3D synergetic effects, and reduces costs without impacting performance.
Due to the excessive use of fungicides, pesticide residues have become a growing concern in recent years. Herein, we demonstrated an easy-prepared and low-cost surface enhanced Raman Scattering (SERS) chip composed of 3D silver microspheres (AgMSs) pattern for the quantitative testing of carbendazim in Chinese tea. Compared with the common monolayer SERS substrate, the 3D patterns formed by self-assembly AgMSs with fine nanostructure can offer much more aggregation-induced hotspots and generate strong 3D synergetic effects. Furthermore, when the thickness of the 3D pattern exceeded 6 mu m, we replaced the conductive supporting coatings using the glass slides to reduce the cost without any impact on SERS properties. The prepared 3D chips achieved the determination of carbendazim within the linear range of 0.1-10 mg/L and the detection limit of 0.01 mg/L. It is simple and sensitive enough for the detection of most pesticide residues or other harmful organic molecules in our food or environment.

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