离子色谱电渗析技术的研究进展

Advances of electrodialytic technologies used in ion chromatography

电渗析器件通常定义为在电场作用下操纵离子从一种溶液穿过离子交换膜迁移到另外一种溶液的一种设备。它可以通过电解水产生氢离子或氢氧根离子,从而用于离子色谱系统的淋洗液在线制备、抑制或检测。相较于人工配制淋洗液或再生液,电渗析技术具有绿色、高效、纯度高、自动化程度高等优势。因此基于电渗析器件的离子色谱系统应用范围越来越大。该文简要评述了近几年该器件的研究进展,具体包括电致淋洗液发生器、电致膜抑制器和电渗析样品前处理器。

An electrodialysis device is used to transport salt ions from one solution to another through an ion-exchange membrane under the influence of an applied electric potential.They can produce hydronium or hydroxide ions via electrodialysis water,which can be used for online preparation of eluents or suppression or detection in ion chromatography(IC).As opposed to the manual preparation of eluents or regenerant solutions,electrodialysis devices have the advantages such as green,efficient and high purity.Thus,IC systems equipped with electrodialysis devices dominate the majority uses of IC system,and more importantly,find widespread application.The present thesis briefly summarizes the latest developments in this area.