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. Author manuscript; available in PMC: 2012 Sep 15.
Published in final edited form as: Anal Chem. 2011 Aug 29;83(18):6929–6934. doi: 10.1021/ac201889j

Figure 4.

Figure 4

Figure 4

(a) Representative electropherograms attained at 288 nm for the study of competitive binding to HSA between ibuprofen and PAA-Fe3O4 NPs. HSA peak appeared at 3.0 min, and the free ibuprofen showed up at around 3.4 min. (b) Normalized θ (the fraction of protein-bound NPs) was plotted against the drug concentration.