摘要
采用共振散射光谱和紫外可见光谱研究了银胶与结晶紫 (CV)的相互作用 .在 pH为 4.0的HAc NaAc缓冲溶液中 ,银胶在 345nm和 70 0nm有两个共振散射峰 ;当加入带正电的阳离子染料结晶紫后 ,产生表面增强效应 ,345nm和 70 0nm处的共振散射信号大为增强 ,从而获得灵敏的表面增强共振散射光谱 .这一新方法在生物分析化学、生物无机化学和半导体光催化研究领域有着重要的用途 .
The interaction between silver sol and crystal violet has been studied by means of resonance scattering spectroscopy and UV spectrophotometry. The silver sol exhibits two resonance scattering peaks at 345 nm and 700 nm in the pH 4.0 buffer solution of 0.3 mol/L acetate. The surface enhanced effect has been observed when the cation dye crystal violet was added to the silver sol. The signal of resonance scattering at 345 nm and 700 nm is enhanced greatly. The sensitive surface enhanced resonance scattering spectra was obtained. This new technique has important uses in bioanalytical chemistry, bioinorganic chemistry and semiconductor photocatalyst.
出处
《分析测试技术与仪器》
CAS
2000年第2期98-100,共3页
Analysis and Testing Technology and Instruments
基金
广西自然科学基金
关键词
表面增强效应
共振散射光谱
银胶
结晶紫
surface enhanced effect
surface enhanced resonance scattering spectoroscopy
silver sol
crystal violet
