催化动力学分析中的Landon反应的应用已见不少报道。本文是将H_2O_2—KI—抗坏血酸体系应用于人发中铁的测定,结果表明,该法灵敏度、回收率、重复性及再现性均能满足发铁的测定要求。本文采用双铂体系利用死停终点法指示诱导期终了,较其它方法如光度法、电位法要简便易行,仪器简单,适用于人发及其他生物样品中铁的测定。 There have been many reports on the application of Landon reaction in catalytic kinetic analysis. In this paper, H_2O_2-KI-ascorbic acid system was applied to the determination of iron in human hair. The results show that the sensitivity, recovery, repeatability and reproducibility of this method all meet the determination requirements of iron. In this paper, the dual platinum system is used to indicate the end of induction period by the method of dead stop. Compared with other methods, such as photometry and potentiometry, it is simple and easy to operate. The instrument is simple and suitable for the determination of iron in human hair and other biological samples.