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１ 引 言锰是人体生命活动中极为重要的微量元素，锰的摄入主要通过食物，因而准确测定食品中锰的含量具有重要意义。锰的测定常用高锰酸盐光度法，该法灵敏度较低。二安替比林苯基甲烷类试剂与锰（Ⅶ）的显色反应具有很高灵敏度，但稳定性和选择性不太好。为了提高该类型显
1 Introduction Manganese is an extremely important trace element in the human life and activity. The intake of manganese mainly passes through the food, so it is of great significance to accurately determine the content of manganese in food. Commonly used in the determination of manganese permanganate photometry, the method of lower sensitivity. Diantipyryl phenyl methane reagents and manganese (Ⅶ) color reaction with high sensitivity, but the stability and selectivity is not very good. In order to improve the type of significant