Evaluation of Hydrophilized Graphite Felt for Electrochemical Heavy Metals Detection (Pb²⁺, Hg²⁺)

Figure 5

Square wave voltammograms and calibrations curve (inset) using graphite felt electrode in 0.1 M sodium acetate/acetic acid buffer at pH 4.5 containing different concentration of Pb²⁺, from 0.65 μM to 1.00 μM, and Hg²⁺, from 3.5 μM to 7.0 μM.