编辑同志: 贵刊1983年第5期刊登了周复元同志的信。信中谈到当显色剂在测定波长处也具有光吸收时,过量显色剂的存在生产两个方面的问题。对于问题一,我同意信中的看法,而对于问题二,我认为不是由于显色剂存在而引起的,而是由于显色剂在测置波长处有光吸收(即ε_R>0)引起的。由作者信 Editor’s comrade: No.5, 1983, published a letter from Comrade Zhou Fuyuan. The letter states that when the color developer also has light absorption at the measurement wavelength, the presence of an excessive amount of the color developer produces two problems. For the first question, I agree with the letter, and for the second question, I think it is not caused by the presence of the developer, but due to the light absorption (ie, ε_R> 0) of the developer at the detection wavelength . Letter from the author