Migration Behavior of Low-Mass Anions in Capillary Electrophoresis
常见阴离子的毛细管电泳迁移行为

The dependence of effective mobility on ionic equivalent conductivity for 33 anions was studiedusing 5 mmol/L sodium chromate and 0. 5 mmol/L tetradecyltrimethylammonium bromide (TTAB) as background electrolyte. The relationship was developed between effective mobility off and carbon number ofmono-carboxylic acid and dicarboxylic acid homologues. The results showed that the effective mobility of anions increased with increasing ionic equivalent conductivity. The l/mff was linearly related to the carbon number of mono-carboxylic acid (C:--C,) and dicarboxylic acid (CZ-C,,). The correlation coefficient was more than0. 997.