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与Cr~(3+)离子类似,痕量Mn~(2+)离子对发光剂鲁米诺(Luminol)在碱性介质中的氧化反应也有催化作用。该反应过程中会发出具有一定波长的光,发光强度与Mn~(2+)离子的含量成比例关系。这一过程可表示为: 所用的氧化剂一般是H_2O_2。通常采用比色法、沉淀法或原子吸收法测定Mn(Ⅱ),这些方法不仅需要烦琐的前处理,而且灵敏度低,重现性差。本文根据上述原理,利用自行设计的注入式发光分析仪,建立了微量Mn(Ⅱ)的化学发光测定法,取得较好的结果.方法简便快
Like Cr ~ (3+) ions, trace Mn 2+ ions also catalyze the oxidation of luminol in alkaline solution. The reaction process will emit a certain wavelength of light, luminescence intensity and Mn ~ (2 +) ion content is proportional to the relationship. This process can be expressed as: The oxidant used is generally H_2O_2. Often the colorimetric, precipitation or atomic absorption method for the determination of Mn (II), these methods not only cumbersome pre-treatment, and low sensitivity, poor reproducibility. Based on the above principle, this paper established a chemiluminescence method for the determination of Mn (Ⅱ) with good performance by using a self-designed injection luminescence analyzer. The method is simple and fast