[Migration behavior of low-mass anions in capillary electrophoresis].
The dependence of effective mobility on ionic equivalent conductivity for 33 anions was studied using 5 mmol/L sodium chromate and 0.5 mmol/L tetradecyltrimethylammonium bromide (TTAB) as background electrolyte. The relationship was developed between effective mobility mueff and carbon number of mono-carboxylic acid and dicarboxylic acid homologues. The results showed that the effective mobility of anions increased with increasing ionic equivalent conductivity. The 1/mueff was linearly related to the carbon number of mono-carboxylic acid (C2-C7) and dicarboxylic acid(C2-C10). The correlation coefficient was more than 0.997.
Zheng
P
P
Analytical and Testing Center, Zhejiang University, Hangzhou, 310027.
Fu
X
X
Lü
J
J
D000838:Anions / Q000032:analysis*; D002264:Carboxylic Acids / Q000032:analysis*; D019075:Electrophoresis, Capillary / Q000379:methods; D000644:Quaternary Ammonium Compounds; D050337:Trimethyl Ammonium Compounds
D000838:Anions; D002264:Carboxylic Acids; D000644:Quaternary Ammonium Compounds; D050337:Trimethyl Ammonium Compounds; C009410:tetradecyltrimethylammonium