在盐酸介质中,维生素C还原Se()生成较稳定的硒纳米微粒.它在可见光范围内无明显特征吸收峰,在340,400,470和520 nm处产生4个共振散射峰.维生素C浓度在0.05~4.0 mg/L范围内与I340 nm呈良好的线性关系.据此本文建立了一个检出限为0.01 mg/L维生素C的共振散射光谱新方法,并用于合成样品和药品中Vc含量的分析,结果满意. In hydrochloric acid medium, vitamin C reduced Se () to produce stable selenium nanoparticles.It has no obvious characteristic absorption peak in the visible range, producing four resonance scattering peaks at 340, 400, 470 and 520 nm.C vitamin C concentration in the range of 0.05 ~ 4.0 mg / L and I340 nm showed a good linear relationship.Therefore, a new method of resonance scattering detection of vitamin C with a detection limit of 0.01 mg / L was established and applied to the analysis of Vc content in synthetic samples and drugs. The results satisfaction.