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研究在酸性介质中及活化剂氨三乙酸存在条件下 ,锰 (II)对高碘酸钾氧化酸性品红褪色的反应具有显著的催化作用 ,利用此性质 ,建立了测定痕量锰 (II)的新体系 .确定了反应条件及共存离子的影响 ,方法的灵敏度为 5.2 4× 1 0 - 11g Mn/ m L,锰 (II)的浓度在 0 .2 0～ 1 9.9ng/ m L范围内 ,ΔA与 Mn(II)含量呈良好的线性关系 .该法用于池塘水及面粉中锰的测定 ,获得了满意的结果 .
The catalytic effect of manganese (II) on the oxidation of acid fuchsin by potassium periodate in the presence of nitrilotriacetic acid was studied in acidic media. Using this property, the determination of trace manganese (II) The sensitivity of the method was 5.2 × 10 11 - 11 g Mn / m L, and the concentration of manganese (II) was in the range of 0 2 0 ~ 1 9.9 ng / m L , ΔA and Mn (II) content showed a good linear relationship.The method was applied to the determination of manganese in pond water and flour, and the satisfactory results were obtained.