【摘要】 本文采用Ｎｄ： ＹＡＧ １ ０６４ ｎｍ 激光器作为发光源并改进银胶制备方法获得了核黄素的近红外表面增强拉曼光谱（ＮＩＲ－ＳＥＲＳ）。发现少量的氢氧化钠可提高核黄素的ＮＩＲ－ＳＥＲＳ增强因子， 其检测限可达３．２×１０－ １０ ｍ ｏｌ·Ｌ－ １ 。证实核黄素在近红外区比可见区有更强的增强因子更多还原

【Abstract】 Surface enhanced Raman spectra(SERS)of riboflavin in silver colloids,using near infrared(NIR) laser operating at 1 064 nm wavelength,were obtained.The enhancement factor was further increased by improving the preparation of silver colloid and with the addition of a small amount of NaOH.The detection limit was lower than 3 2×10 -10 mol·L -1 .It is concluded that the larger and aggregated silver particles were more efficient for the electromagnetic enhancement of NIR SERS.Flavin ring was absorbed on the colloidal silver methal surface,standing on oxygens of C(20) O and C(4) O .更多还原