Jt. Eleveld et al., EVALUATION OF MIXED-MODE STATIONARY PHASES IN LIQUID-CHROMATOGRAPHY FOR THE SEPARATION OF CHARGED AND UNCHARGED OLIGOMER-LIKE MODEL COMPOUNDS, Journal of chromatography, 677(2), 1994, pp. 211-227
The possibility to separate charged and uncharged oligomer-like test c
ompounds by high-performance liquid chromatography was investigated, u
sing mixed-mode (reversed-phase/anion-exchange) stationary phases. In
order to examine this possibility, several columns were evaluated for
their reversed-phase, anion-exchange and mixed-mode properties using n
eutral and charged model compounds. The OmniPac PAX-500, the PRP-X100
and the mixed-phase PLRP-S/PL-SAX columns showed promising results for
the separation of real samples.