Is the reduction peak for the gold electrode in differential pulse voltammetry shown near -1.0 V?

I am testing a biosensor system using gold electrodes. The differential pulse voltammetry (DPV) plots peaked at -1.0 ~ -1.2 V rather than -0.3 V when I used 20 mM Tris-HCl and 20 mM NaCl...

23 April 2023 9,771 1 View