Sensitive Detection of Rhodamine B in Condiments Using Surface-Enhanced Resonance Raman Scattering (SERRS) Silver Nanowires as Substrate

Applied Spectroscopy
Lixia ZhangYuan Tian

Abstract

In this paper, a facile large-scale preparation of surface-enhanced resonance Raman scattering (SERRS) substrates for the determination of Rhodamine B (RhB) based on silver nanowires (Ag NWs) has been developed. The morphology, structure, and properties of as-prepared Ag NWs are characterized using ultraviolet-visible (UV-Vis) spectroscopy, field emission scanning electron microscopy (FE-SEM), and X-ray diffraction (XRD), respectively. Ag NWs were assembled onto glass slides through a self-assembly method. Moreover, in our experiment, as-prepared Ag NWs@glass were used as a SERRS substrate to detect RhB at the excitation wavelength of 532 nm. Experimental conditions such as pH value and soaking time on SERRS performance were studied and optimized. Under the optimized conditions, the SERRS intensity at 1648 cm-1 exhibited a linear relationship with the concentration of RhB in the range of 1.0 × 10-9-1.0 × 10-5 mol L-1 and detection limit (signal-to-noise ratio [S/N] = 3) is as low as 0.3 nmol L-1. The corresponding correlation coefficient of the linear equation was 0.996. This method based on Ag NWs@glass for the detection of RhB in three kinds of condiment was investigated. The limits of detection (LODs) for RhB were 0.35 µg/g ...Continue Reading

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Citations

Nov 23, 2018·Food Additives & Contaminants. Part B, Surveillance·Minjuan WangYang Li
May 1, 2021·Dalton Transactions : an International Journal of Inorganic Chemistry·Nguyen Thanh ThaoNhu Hoa Thi Tran
Jul 24, 2021·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·Nguyen Tran Truc PhuongKieu The Loan Trinh

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Methods Mentioned

BETA
surface plasmon resonances
Scanning electron microscopy

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