The article deal with the determination of total manganese content in manganomanganic oxide using ammonium persulfate as oxidant,and evaluated the accuracy and precision for the determining method.

• 用过硫酸铵作为氧化剂对四氧化三锰中总锰的含量进行测定,并对测定方法的准确度和精密度进行了讨论和评价。