| 光谱学与光谱分析 |
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| Monolithic Column-Gold Composite Substrate Preparation and Application to SERS Detection of Pigment |
| XIE Yun-fei, LI Yan, YU Hui, QIAN He, YAO Wei-rong* |
| State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China |
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Abstract In the present study, we developed a novel SERS substrate with the porous monolith material combined with classic gold nanoparticles, and erythrosine as the research object, by adjusting the different experimental conditions for optimal SERS enhancements, including system pH and mixing time, and ultimately selected the optimum pH value 5.06 and mixing time 25 min. Compared with the traditional gold plastic substrate enhancement effect, the experimental conditions were applied to the monolith substrate SERS detection of dye erythrosine, different concentrations of samples were used for erythrosine SERS detection, and the detection limit reached 0.1 g·mL-1. The method uses the payload of gold nanoparticles in mesoporous materials to effectively enhance the SERS signal. And this method has the advantages of simpleness and good stability, which provides a favorable theoretical basis for the rapid prohibited colorings screening.
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Received: 2013-04-25
Accepted: 2013-07-25
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Corresponding Authors:
YAO Wei-rong
E-mail: yaoweirongcn@jiangnan.edu.cn
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