Journal of Chromatography A volume 1218, issue 52, P9428-9434 2011 DOI: 10.1016/j.chroma.2011.11.013 View full text
Jun Cao, Ping Li, Ling Yi

Abstract: A new CE system using ionic liquids coated multi-walled carbon nanotubes (ILs-MWNTs) as pseudostationary phase was developed for the simultaneous determination of four flavonoids, four phenolic acids and two saponins. Several parameters affecting the separation were studied, including the choice of ILs, ILs-MWNTs concentration, the respective use of ILs and MWNTs, buffer pH, SDS concentration and borate content. Results revealed that the addition of ILs-MWNTs in running electrolytes enhanced the separation of …

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