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在各种被研究的物质中,测定锰的含量时,这是应用得最普遍的方法。在这个方法中,锰被氧化成为高锰酸根离子——MnO_4~-,更方便地用来测定的方法是比色法或容量法。这个方法普遍地被应用,并且在各种分析化学手册中都有记载。使用铋酸钠和若干其他氧化剂,可以使锰氧化成为MnO_4~-离子。但是按照其有效程度及特点来讲,对分析上测定含锰量有实际用途的只有过硫酸盐,因此为了这个目的,常应用过硫酸盐。可惜,如果在溶液中不加入能起催化作用的银的化合物,过硫酸盐本身不能氧化低价的锰为MnO_4~-。为了减少贵重稀少的银化合物消耗起见,
Among the various studied substances, this is the most commonly used method for determining the content of manganese. In this method, manganese is oxidized to permanganate ions - MnO 4 - -, and the more convenient method for determining is the colorimetry or volumetric method. This method is commonly used and is described in various analytical chemistry manuals. Using sodium bismuthate and several other oxidants, manganese can be oxidized to MnO 4 - ions. However, in terms of their effectiveness and characteristics, only persulfate is practical for the analytical determination of manganese content, so persulfates are often used for this purpose. Unfortunately, if no catalytically active silver compound is added to the solution, the persulfate itself can not oxidize the less expensive manganese to MnO 4 -. In order to reduce the consumption of precious and scarce silver compounds,