Applying potassium periodate oxidation method, the paper detects the manganese content in steel, introduces experimental principles, instruments and reagent, analyzes solution preparation, blank value determination, and minimum detection limit determination and other experi-mental process, and finally points out its advantages, such simple operation, high flexibility and good density and so on.%采用高碘酸钠(钾)分光度法，对钢铁中锰含量进行了测定，介绍了实验原理、所用仪器与试剂，并对试液制备、空白值测定、最低检出限测定等实验过程进行了阐述分析，指出利用该方法测定钢铁中锰含量具有操作简便、灵敏度高、精密度好等优点。
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