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本文通过研究锰对KIO_4氧化亮绿的催化作用的适宜条件,建立了测定痕量Mn的分析方法,测定波长为460nm,符合比尔定律的范围是0.1～2.5ppb,检测限为3.8×10~(-11)g/ml,测定婴儿食品中锰含量得到满意结果。
In this paper, an analytical method for the determination of trace Mn was established by studying the suitable conditions for the catalytic effect of manganese on the bright green color of KIO_4. The determination of trace Mn was carried out at a wavelength of 460 nm. Beer’s law was obeyed in the range of 0.1-2.5 ppb with a detection limit of 3.8 × 10 ~ -11) g / ml, determination of manganese content in baby food satisfactory results.