本文所叙述的方法是测定没有取代基或者是有烷基,烃氧基,羟基和卤素基取代的芳香胺的化合物,胺直接用醋酐在吡啶中滴定,酚,醇,和脂肪胺没有干扰。每种芳香胺和它的乙酰化产物的紫外吸收光谱是用分光光度计测定的,滴定时,仅测定 The method described herein is to determine compounds without substituents or aromatic amines substituted with alkyl, alkoxy, hydroxyl and halo groups, the amine is titrated directly with pyridine in pyridine, and the phenol, alcohol, and fatty amine are not disturbed . The UV absorption spectrum of each of the aromatic amine and its acetylated product was measured by a spectrophotometer, and only titration