Abstract:

The suppressor column for Ion Chromatography (IC) is one of important parts in the IC system. The conventional suppressor column, packed with a suitable ion-exchange resin, must be regenerated periodically. This drawback has been overcome by introduction of the ion-exchange fiber suppressor (FS) and micro-membrane suppressor(MMS). However, since the operation of FS and MMS are based on the diffusion principle, some problems such as complex construction, higher-pressure drop along the column and valuable price arise. In order to overcome these weaknesses an electrochemical suppressor (ES), which is based on the electrochemical principle,was developed by us. Although ES is superior to FS and MMS in principle,structure and operating its suppression capacity is lower than MMS.