磺胺嘧啶混悬剂(大力克)为临床常用药,制剂中磺胺嘧啶的含量测定都采用重氮化法,终点难以掌握,测定时受温度影响较大。磺胺嘧啶在0.1mol/L盐酸中于波长243nm处有明显的吸收峰。本文采用分光光度法测定磺胺嘧啶的含量,方法简便、快速、准确性高。仪器与试药 751G分光光度计 (上海分析仪器厂);磺 Sulfadiazine suspension (large Lectra) for the clinical commonly used drugs, sulfadiazine preparations in the determination of the use of diazotization method, the end point is difficult to grasp, measured by temperature greater impact. Sulfadiazine in 0.1mol / L hydrochloric acid at a wavelength of 243nm at a significant absorption peak. In this paper, the spectrophotometric determination of sulfadiazine content, the method is simple, rapid and accurate. Instruments and reagents 751G spectrophotometer (Shanghai Analytical Instrument Factory); Sulfur