Citation: ZHAO Rui-Chi, WANG Pei-Long, SHI Lei, SU Xiao-Ou. Determination of Melamine in Milk by Surface Enhanced Raman Scattering Technique Based on Self-Assembly Ordered Silver Nanowires[J]. Chinese Journal of Analytical Chemistry, ;2017, 45(1): 75-82. doi: 10.11895/j.issn.0253-3820.160533 shu

Determination of Melamine in Milk by Surface Enhanced Raman Scattering Technique Based on Self-Assembly Ordered Silver Nanowires

1.
School of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian 116029, China;
2.
Key Laboratory of Agro-product Safety and Quality, Ministry of Agriculture, Institute of Quality Standards & Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing 100081, China

Received Date: 14 July 2016
Revised Date: 22 September 2016

Fund Project: This work was supported by the National Natural Science Foundation of China (No.21576128)

The fundamental technique of surface enhanced Raman scattering (SERS) is to fabricate a sensitive SERS substrate. A rapid and sensitive detection of trace amounts of melamine in sample was developed, in which a SERS substrate based on ordered silver nanowires (AgNWs) was synthesized and assembled via polyol-fluid flow method. The characteristic Raman peak of melamine was obtained through the theoretical calculation and experimental investigation. And the detection conditions of melamine SERS on the ordered silver nanowire substrate were optimized. Under the optimum conditions including pH=8, water as solvent and 14 min of solvent evaporation time, a good linearity (R=0.997) between characteristic peak intensity and melamine concentration was obtained in the range of 0.05-1.00 mg/L with the detection limit of 0.05 mg/L. The recovery of melamine spiked in milk sample was from 89.7% to 109.2% and the relative standard deviation was below 6.8%. The method exhibited good sensitivity and stability for the detection of melamine, and could provide the technical support for the SERS detection of other small molecule compounds.
- Ordered silver nanowires,
- Melamine,
- Surface enhanced Raman scattering
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沈阳化工大学材料科学与工程学院沈阳 110142