【摘要】 本文研究了硫酸介质中痕量 Fe（Ⅲ）催化加速抗坏血酸、溴酸钾和三溴偶氮胂之间的褪色反应及动力学条件,建立了动力学光度法测定痕量Fe（Ⅲ）的新方法.方法灵敏度为1.82×10^-12g·ml^-1.测定范围为Fe（Ⅲ）0～30ng/25ml.已用于人发和食品中痕量铁的测定.结果满意.更多还原

【Abstract】 Trace amounts of Fe（ I ） catalyzes the decoloring oxidizing reaction among tribromoarscnazo ascorbic acid and potassium bromate in sulphuric acid medium. The kinetic conditions has been studied in detail. A new method of kinetic spcc-trophotomctry for the determination of trace Fe（ I ） is established. The sensitivity of the method is 1. 82 × 10^-12g ·ml⁾-1). The range of measurement is Fe（ 1 ）0³0 ng/25ml. The method has been used for determining trace iron in human hair and food samples with satisfactory results.更多还原