在测铁时,经常要分离Cu、Au、Ag、As、Sb、Mo、W等元素,操作烦琐,还往往带来误差。用抗坏血酸作为铁的滴定剂,不分离铜可直接测定,但其它元素对测定有无影响,则未见报道。本文对抗坏血酸测定铁进行了实验研究,结果表明,上述各元素对测铁均无影响,因此本法优于重铬酸钾、硫酸铈、 In measuring iron, often separated Cu, Au, Ag, As, Sb, Mo, W and other elements, cumbersome operation, but also often bring errors. Ascorbic acid as iron titrant, without separation of copper can be directly measured, but the other elements have no effect on the determination, it has not been reported. In this paper, ascorbic acid determination of iron was studied, the results show that the above elements have no effect on the iron measurement, so this method is better than potassium dichromate, cerium sulfate,