Electrochemical Immunoassay of Escherichia coli O157:H7 Using Ag@SiO2 Nanoparticles as Labels
Figure 4
(a) Typical electrochemical DPV curves corresponding to released Ag+ from Ag@SiO2 labels with increasing concentration of E. coli O157:H7 (from to : 0, 20, 50, 100, 500, 1000, 3000, 5000, and 8000 cfu/mL, resp.). (b) Calibration curves of the immunosensor for E. coli O157:H7 determination.
