Biopolymer-Modified Carbon Paste Electrode for the Electrochemical Detection of Pb(II) in Water

<div>(a) Square-wave voltammograms recorded at different concentrations of Pb (II) in the range of 3 <i>μ</i>M to 21 <i>μ</i>M, in 0.1 M NaCl under optimal parameters (pH 9.0) using lignin-CPE. (b) Calibration curves of the lignin-CPE-modified electrode towards Pb (II) at different concentrations.</div>

Journal of Analytical Methods in Chemistry

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Figure 9

Figure 9: Biopolymer-Modified Carbon Paste Electrode for the Electrochemical Detection of Pb(II) in Water 