１引言由于元素的不同价态、不同存在形态具有不同的物理、化学性质与生理活性。如Ｃｒ（Ⅲ）是人体必需的元素，而Ｃｒ（Ⅵ）则是有害的。因此，离子的价态分析具有十分重要的意义。由于毛细管电泳可实现阴阳离子的同时分析，与离子色谱相比，具有简单、快速的特点。本文采用 1 Introduction Due to the different valence states of the elements, different existing forms have different physical, chemical and physiological activities. Such as Cr (III) is an essential element of the human body, while Cr (VI) is harmful. Therefore, the valence analysis of ions is of great significance. Capillary electrophoresis can achieve the simultaneous analysis of anion and cation, compared with ion chromatography, with a simple, fast features. This article uses