The result of the experiment shows that in pH=1.69 H2SO4 medium, the content of ascorbic acid and the final time make a good linear relation in a broader conce n tra t ion range . A satisfactory esult ris got after it is used in analyzing Vc drugs.

• 实验结果表明；在pH=1.；69H_2SO_4介质中；抗坏血酸的含量与达到终点的时间在较宽的浓度范围内呈良好的线性关系；用于Vc药片的分析；结果满意