自从对氨基水杨酸钠用于医疗以来,其最主要的不纯物间氨基酚的含量是许多作者甚感兴趣的对象。虽然间氨基酚本身的毒性并不大,但它的氧化产物具有强烈毒性,因之对间氨基酚含量的测定无疑是必要的。过去多数文献报导是用提取法或沉淀法来预先分离间氨基 Since the use of sodium aminosalicylate for medical purposes, the content of the most important impurity, aminophenol, has been of major interest to many authors. Although the toxicity of meta-aminophenol itself is not great, its oxidation product is highly toxic and therefore the determination of the content of m-aminophenol is undoubtedly necessary. In the past, most of the literature reported that pre-isolation of metaamino by extraction or precipitation