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Chromatograms of ibuprofen obtained on the sorbent containing eremomycin (CSP-1) and the sorbent containing eremomycin and BSA (CSP-2). Mobile phase: MeOH/phosphate buffer solution (0.1 M, pH 6.5); 50/50 (v/v); flow rate: 0.5 mL/min; λ =220 nm.
