NPs-NH2 shows a peak at 26min and pure folate showsa maximum peak at
72min. NPs-folate shows single peak, like that of NPs-NH2,at 26min, indicating
that folate is covalenltly bound to NPs-NH2
Figure 1: Gel Permeation Chromatography (GPC) chromatograms of NPsfolate,
NPs-NH2, and pure folate with detection wavelength length 280nm.