Anion chromatography: Comparison of eluant pH, concentration, and flow rate

摘要

This paper describes an ion-chromatographic method that combines a chemically suppressed detection system with a polymethacrylate column (usually used with nonsuppressed systems) at a slightly acidic pH. The procedure was designed to increase the separation of the F(sup (minus)) peak from the water dip and to increase the separation of the HPO(sub 4)(sup 2(minus)) peak from a very large NO(sub 3)(sup minus) peak. Also discussed are experiments that studied the effects of changing eluant concentration and flow rate on anion retention time. 10 refs, 9 tabs, 6 figs.