Fig. 4From: H2O2 biosensor consisted of hemoglobin-DNA conjugate on nanoporous gold thin film electrode with electrochemical signal enhancementa Cyclic voltammograms of Bare gold, NPGF electrode, NPGF/6-MHA/Hb, NPGF/DNA/Hb in PBS; amperometric i-t curves of b addition of 10 μL of 100 μM H2O2 solution; c Successive addition of 1 µM UA, AA, NaNO2, NaHCO3, and 1 µM H2O2 solution; d successive addition of serum without H2O2 once and serum with 1 µM of H2O2 twiceBack to article page