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Effect of the ionic strength of the LC and CE buffers on the CE separation efficiency: (A) 10 mM LC buffer and 100 mM CE buffer; (B) 10 mM LC buffer and 150 mM CE buffer; (C) 7.5 mM LC buffer and 150 mM CE buffer, LC buffer, lithium citrate, pH 2.5/acetonitrile (70:30 v/v); CE buffer, lithium acetate, pH 4.75. Other conditions as in Figure 4.
