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. Author manuscript; available in PMC: 2011 Mar 1.
Published in final edited form as: J Chromatogr B Analyt Technol Biomed Life Sci. 2010 Jan 25;878(7-8):705–708. doi: 10.1016/j.jchromb.2010.01.016

Figure 4.

Figure 4

Chromatograms obtained for the injection of propranolol onto an AGP column in the presence of lidocaine as a mobile phase additive. The concentrations of lidocaine in the mobile phase (from top-to-bottom) were 20, 15, 10, 7.5, and 5 μM. These experiments were conducted at pH 7.4 and 37 °C.