Sample is directly heated with an electrical stove and it is titrated after its acid content is adjusted, by which the result consisted with that of a common determining method is obtained.

• 对饮用水中化学耗氧量(COD)的通用测定方法进行了改进,采用一定功率的电炉直接加热试样,调节酸度后进行滴定,得到了和通用测定法相同的测定结果。