阿司匹林为常用的解热镇痛药,近报道阿司匹林还有防治冠状动脉硬化和抗血栓等新用途。随着药剂工业的发展,出现了阿司匹林缓释长效片的新剂型。基于酚类化合物在溶液中与高铁离子作用,形成有色络合物的特性,将阿司匹林先在碱性条件下水解,然后利用水解产物水杨酸在酸性环境下与硝酸铁显色,于540nm处测定吸收度 Aspirin is commonly used antipyretic analgesics, aspirin has recently reported prevention and treatment of coronary atherosclerosis and other new uses such as anti-thrombosis. With the development of pharmacy industry, new dosage forms of aspirin sustained-release tablets have appeared. Based on the fact that phenolic compounds interact with ferric ions in solution to form colored complexes, aspirin is first hydrolyzed under alkaline conditions and then salified with salicylic acid in an acidic environment with ferric nitrate at 540 nm Absorbance was measured