Figure 6.

(A) DPV response curves of PtNPs/CoTPP/rGO-based non-enzymatic electrochemical immunoassay toward different-concentration AFB₁ standards in pH 7.0 PBS containing 50 μM H₂O₂ (Inset: Calibration plots), and (B) the specificity of the developed immunoassay against target AFB₁ (0.1 ng mL⁻¹), AFB₂ (0.1 ng mL⁻¹), AFG₁ (0.1 ng mL⁻¹), AFG₂ (0.1 ng mL⁻¹), AFP (50 ng mL⁻¹) and TSH (50 ng mL⁻¹). Each data point represents the average value obtained from three different measurements.