铁是人体不可缺少的微量元素,是血红蛋白的核心部分,正常成人体内铁的总量为2~4g。目前,测定痕量铁的方法有伏安法[1]、化学发光法[2]、色谱法[3]、极谱法[4]、原子吸收光谱法[5]、激光光热折射光谱法[6]、微晶石蜡柱固相萃取法[7]、二阶导数光谱-峰面积积分光度法[8]和分光光度法[9]等。阻抑动力学分光光度法是利用具有氧化性的物质如高碘酸钾、过氧化氢、三价铁离子、溴酸钾等,对在不同波 Iron is an indispensable trace element of the human body, is the core of hemoglobin, the normal adult body iron is 2 ~ 4g. At present, the methods for the determination of trace iron include voltammetry [1], chemiluminescence [2], chromatography [3], polarography [4], atomic absorption spectroscopy [5], laser photothermal spectroscopy [6], microcrystalline paraffin column solid phase extraction [7], second derivative spectroscopy - peak area spectrophotometry [8] and spectrophotometry [9]. Inhibition kinetic spectrophotometry is the use of oxidizing substances such as potassium periodate, hydrogen peroxide, ferric ion, potassium bromate, etc., in different waves