Effect of mobile phase buffer pH on separation selectivity of some isoquinoline alkaloids in reversed-phase systems of Pressuriz
Journal Title: Current Issues in Pharmacy and Medical Sciences - Year 2013, Vol 26, Issue 1
Abstract
Separation of some isoquinoline alkaloids (narcotine, chelidonine, dihydrocodeine, cinchonine, berberine, cinchonidine, papaverine, apomorphine) has been investigated with pressurized planar electrochromatography (PPEC) and high-performance thin-layer chromatography (HPTLC) in reversed-phase systems. The mobile phase consisted of acetonitrile and aqueous buffer (disodium phosphate and citric acid). The influence of the mobile phase buffer pH on migration distance (PPEC) and retardation factor (HPTLC) of the solutes has been investigated and compared. The results show different separation selectivity in both PPEC and HPTLC systems especially at pH range of buffer solution of the mobile phase that facilitates ionization of the solutes investigated.
Authors and Affiliations
Ewelina Kopciał, Beata Polak, Rafał Pietraś, Paulina Mączka, Tadeusz Dzido
Keywords
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