药物中安乃近含量的光度法测定

Determination of Analginum in pills by Spectrophotometry

本文基于安乃近有还原性 ,在酸性介质中可将 Fe3+ 还原为 Fe2 + ,邻二氮菲能与所生成的 Fe2 + 显色生成红色络合物 ,最大吸收峰在 5 10 nm处。采用邻二氮菲光度法测定了药物中的安乃近含量 ,结果令人满意。

Analginum can be oxidized by Fe(Ⅲ) in acidic solution.Fe(Ⅱ) can form a complex with o phenanthroline hydrate,of which the maximum absorbance is at 510nm.Thus analginum in analgium pills has been determined by o phenanthroline spectrophotometry with satisfactory results.y Fe( ) in acidic solution