Ag. Mckillop et al., MIXED CAPILLARY ELECTROPHORETIC AND REVERSED-PHASE ELECTROCHROMATOGRAPHIC SEPARATION OF 4-N-ALKYLBENZOIC ACID, Journal of chromatography, 805(1-2), 1998, pp. 327-329
Citations number
4
Categorie Soggetti
Chemistry Analytical","Biochemical Research Methods
The apparent electrophoretic mobilities of 4-alkylbenzoic acids with s
ide chain lengths of greater than seven carbon atoms in bonded phase c
apillaries were anomalously high compared to shorter homologues. This
was identified as resulting from their slower migration rates caused b
y interactions with the wall of the column. The effect could be reduce
d by the addition of acetonitrile to the buffer solution suggesting a
reversed-phase partitioning process. These compounds thus demonstrated
a mixed electromigration and open-tubular reversed-phase electrochrom
atographic separation. However, because a relatively wide bore column
was used, the efficiencies were poorer than previously reported for op
en-tubular electrochromatographic separations. (C) 1998 Elsevier Scien
ce B.V.