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Application of capillary electrophoresis to the simultaneous determination and stability study of four extensively used penicillin derivatives BJPS
Simon,Brigitta; Hancu,Gabriel; Gyéresi,Árpád.
The applicability of capillary electrophoresis for the analysis of four extensively used penicillin derivatives (benzylpenicillin, ampicillin, amoxicillin, oxacilllin) has been studied. Because of structural similarities, the electrophoretic behavior of these derivatives is very similar; consequently an efficient separation using the conventional capillary zone electrophoresis is hard to be achieved. Their simultaneous separation was solved by using micellar electrokinetic capillary chromatography, the separation being based on the differential partition of the analytes between the micellar and aqueous phase. Using a buffer solution containing 25 mM sodium tetraborate and 100 mM sodium dodecyl sulfate as surfactant, at a pH of 9.3, applying a voltage of +...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Penicillin/derivatives/stability study; Capillary electrophoresis/drugs analysis.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502014000300521
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