Separation of chlorine-containing anions by ion chromatography and capillary electrophoresis

Chlorine is still commonly used as disinfectant in water and waste treatment and as bleaching agents in the paper industry. In these processes, numerous chlorine-containing anions are formed with different oxidation states, such as chloride, chlorite, chlorate and perchlorate. The present study is focused on the development of a single-column ion chromatography (SCIC) method and the use of capillary electrophoresis (CE) for the determination of chlorine anions in water at a concentration level up to 25 mg/l for IC and 20 mg/l for CE in the presence of nitrate and sulphate. (C) 1997 Elsevier Science B.V.