常规的分光光度计已被用于研究在水性介质中通过抗坏血酸（维生素C）还原高锰酸根离子的动力学。氧化过程显示出复杂的动力学。已经观察到每种反应物的一级依赖性和二级整体动力学。随着[H + ]的增加，氧化速率的降低表明该氧化具有酸抑制性质。动力学和分光光度法证明了通过氧化过程形成中间配合物的证据。通过丙烯腈试剂的测试证实了自由基干预的形成。Mn 3+和/ Mn 4+的形成通过反应的进行的多种反应性物质是由Mn添加确认2+和F -物种。肉眼观察表明，高锰酸根离子的紫色首先变成玫瑰色，然后迅速消失，得到无色溶液。通过使无色溶液老化，特别是在抗坏血酸比高锰酸根离子浓度大得多的存在下，形成胶状聚集体溶胶的黑褐色。对衍生物的分析表明，最终形成了脱氢粘酸和锰（0）纳米颗粒氧化产物。提出并通过评估活化参数和动力学观察结果讨论了一步中两个电子变化的内球机理。

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A conventional spectrophotometer has been applied for investigating the kinetics of reduction of permanganate ion by ascorbic acid (vitamin C) in aqueous media. The oxidation process showed complexity kinetics. First- order dependences in each of the reactants and second-order overall kinetics has been observed. The decrease in the oxidation rates with increasing the [H+] indicated that the oxidation was of acid-inhibition nature. Kinetics and spectrophotometric evidences for formation of intermediate complexes through the oxidation process have been revealed. Formation of free-radical intervention was confirmed by the test of acrylonitrile reagent. Formation of either Mn3+ and/Mn4+ as the more reactive species through the progression of reaction were confirmed by the added Mn2+ and F− species. The naked-eyes observation indicated that the purple color of permanganate ion was firstly turned into rose color, which is rapidly disappeared to give a colorless solution. A black brownish of colloidal aggregate sol was formed by aging the colorless solution particularly in the presence of large excess of ascorbic acid over that of permanganate ion concentration, The analysis of the derivatives indicated the formation of dehydroscobic acid and manganese (0) nanoparticles as final oxidation products. An inner-sphere mechanism of two electron changes in a single step was suggested and discussed in terms of the evaluated activation parameters and kinetic observations.