A Comparative Electrochemical Behaviour Study and Analytical Detection of the p-Nitrophenol Using Silver Solid Amalgam, Mercury, and Silver Electrodes

Figure 3

Square wave voltammograms obtained for the reduction of 4-NP for the AgSAE in 10 mL of BR buffer (pH 7.0), 𝑓=100 s⁻¹, 𝑎=50 mV, and Δ𝐸_𝑠=2 mV, with additions of 0.55 (1); 1.10 (2); 1.51 (3); 2.00 (4); 2.49 (5); 2.94 (6); 3.45 (7); 3.92 (8); 4.39 (9); 4.86 (10) ×10⁻⁶ moL L⁻¹ 4-NP solutions. The insert shows the analytical curve obtained.