The metol content and the hydroquinol content in developer solution were analyzed by potential spectrum method.During this analysis, two components were continuously titrated at the same time. 采用一种新的化学分析方法电位波谱法分析显影液中的米吐尔和对苯二酚的含量,在研究过程中实现了这两种成分的连续滴定分析。