Research Article
Evaluation of Hydrophilized Graphite Felt for Electrochemical Heavy Metals Detection (Pb2+, Hg2+)
Figure 3
Square wave voltammograms and calibration curves (inset) using graphite felt electrode in 0.1 M sodium acetate/acetic acid buffer at pH 4.5 containing different concentrations of (a) Pb2+ from 0.5 μM to 0.9 μM and (b) Hg2+ from 2 μM to 5 μM. Note a shift of the baseline due to the capacitive current of the graphite felt.
| (a) |
| (b) |