This work established the derivative ultraviolet absorption spectroscopy determination of sulfadiazine(SD),sulfamerhoxazole(SMZ) and trimethoprim(TMP) in multi component sulphonamide reagent.

• 作者建立了同时测定联磺制剂中磺胺嘧啶（SD），磺胺甲基异啮唑（SMZ）和甲氧苄氨嘧啶（TMP）三组分含量的导数紫外分光光度法。