党参煎剂表面增强拉曼光谱

Surface-Enhanced Raman Spectroscopy of Dangshen Decoction

测试研究了党参中药材不同部位的拉曼光谱、党参煎剂的拉曼光谱以及党参煎剂的表面增强拉曼光谱(SERS)。党参煎剂在银胶中的SERS信号明显增强。测试了党参煎剂、银胶以及党参煎剂与银胶混合体的吸收光谱,探讨了党参煎剂在银胶上的吸附特性及表面增强机理,并对所获得的党参煎剂的SERS信号进行初步谱峰归属。研究表明,SERS可能为党参煎剂或其他中成药生产、质量监控提供一种直接、快速、准确的检测新方法。

The Raman spectra of Dangshen medicinal materials are tested in different positions.The normal Raman spectrum and surface-enhanced Raman spectrum（SERS） of Dangshen decoction are tested and analyzed.The intensity of the SERS of Dangshen decoction in the silver colloid is increased obviously.The characteristic Raman bands of Dangshen decoction were tentatively assigned.The absorption spectroscopy of Dangshen decoction and the mixture of silver colloids and Dangshen decoction are measured.A new resonance absorption peak was observed in the long-wavelength region in UV-Vis absorption spectra of the mixture.The adsorption characteristics and possible enhancing mechanism of the Dangshen decoction on silver colloid were speculated.The results show that the surface-enhanced Raman spectroscopy might provide a new kind of precise,direct and fast detecting method for the detection of Dangshen decoction or other Traditional Chinese medicine.