摘要：

研究了离子交换水硬度的简便、快速的目视比色法。在pH=10时，用铬黑T、甲基红为显色剂，测定软化水硬度在0～2.0×10-5mol/L范围时，结果与EDTA络合滴定法一致。

关键词: 离子交换水, 硬度, 铬黑T, 甲基红, 目视比色法

Abstract:

Study of the ion exchange water hardness is simple, rapid visual colorimetric method.In the pH = 10, with chrome black T, methyl red as the chromogenic agent, determination of demineralized water hardness in 0 ～ 2.0 10 5mol/L range, the results are consistent with EDTA complexometric titration.

Key words: Ion exchange water, hardness, Chromium black T, Methyl red, Visual colorimetry