文献类型：期刊文献

英文题名：Fabrication of Encapsulated and Sticky Surface-Enhanced Raman Spectroscopy Substrate Coupling with Thin Layer Chromatography for Determination of Pesticide

作者：Kang, Yan[1]; Hu, Yunchi[1]; Ha, Tong[1]; Ma, Yunsheng[2]; Yu, Xinhai[3]

机构：[1] School of Chemistry & Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China; [2] Shandong Chambroad Holding Group Co., Ltd, Boxing, 256500, China; [3] Key Laboratory of Pressure Systems and Safety [MOE], School of Mechanical and Power Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China

年份：2022

外文期刊名：SSRN

收录：EI(收录号：20220447820)

语种：英文

外文关键词：Fabrication - Light transmission - Pesticides - Polyethylene glycols - Raman scattering - Raman spectroscopy - Substrates - Surface scattering - Thin layer chromatography

摘要：A sealed and sticky surface-enhanced Raman scattering (SERS) substrate was fabricated by screen-printed technology. The screen-printed ink was prepared by mixing poly(ethylene glycol) diacrylate (PEGDA), Ag nanoparticles (Ag-NPs) and photoinitiator. After printed on supporting material, PEGDA can polymerize into film under UV light illumination. Ag-NPs were sealed and protected by this film. SERS signal of 10-12 M rhodamine 6G has been recorded on this substrate. The homogeneity of this substrate was examined by mapping experiments, and the relative standard deviation of the signals from 48 points was within 10%, indicating high uniformity of this substrate. Upon coupling with thin layer chromatography (TLC), this sticky SERS substrate can be in thorough contact with the separated targets on TLC plates and stick to them firmly by pressing a cover, which was effective for improving the detection sensitivity. This coupling technology exhibited good performance for determination of thiabendazole in complex matrix with a detection limit of 0.01 μg/mL. ? 2022, The Authors. All rights reserved.