A Calibration Strategy for Stripping Voltammetry of Lead on Silver Electrodes

Abstract

This work presents a calibration strategy for stripping voltammetry which enables improving and testing accuracy, using as an example quantitative determination of lead ions on a silver electrode. The proposed procedure integrates the interpolative and extrapolative conventional calibration methods. In the proposed approach the accuracy of determination is verified by the evaluation of the statistical agreement of the results obtained in standard addition and a series of standard methodologies. In the experiments only the standard solutions used to perform quantification are required. The application of procedures of baseline subtraction may decrease the value of systematic error, therefore such an algorithm constitutes an essential part of the described methodology and has been given in detail. The proposed calibration strategy has been tested for the determination of Pb(II) ions in certified reference material (CRM) water samples.

Review—Voltammetric Sensors with Laterally Placed Working Electrodes: A Review

“…62 SAS are adsorbed on the electrode surface decreasing its area, what in turn leads to a considerable signal decrease 1,20 and difference in the absolute values of the peak currents in the supporting electrolyte and studied samples containing organic matter (OM) and SAS. 63 Moreover, they may distort the analytical signal (peak or wave shape) 21 or cause its complete deterioration. 2 Due to the natural abundance of SAS in the variety of samples and the abovementioned drawbacks in voltammetric measurements, the appropriate sample pretreatment is required.…”

Improved sensitive detection of Pb2+ and Cd2+ in water samples at electrodeposited silver nanonuts on a glassy carbon electrode

“…11,12 But, in these cases the ASV signals were distorted under natural water systems, due to the presence of surfactants and other inorganic metal ions. Numerous modified electrodes such as silver electrodes, 13,14 bismuth-antimony film electrodes, 15 antimony film microelectrodes, 16 barium hydrogen phosphate modified carbon paste electrodes, 17 bismuth-PANI modified glassy carbon electrodes, 18 bismuth film glassy carbon electrodes, 19 carbonmercury thin film electrodes, 20 organofunctionalized SBA-15 nanostructured silica modified graphite-polyurethane composite electrodes, 21 unmodified edge plane pyrolytic graphite electrodes, 22 are reported for the detection of Pb 2+ and Cd 2+ . But, these methods showed interference of other ions, and low efficiency.…”

Electrochemistry at Krakowian research institutions

“…The superhydrophobic properties of coatings are also in interest of scientists [43]. Research groups have been collaborating with international groups from Germany [44][45][46][47], Japan [48][49][50][51][52], France [53], Algeria [54] [87][88][89][90][91] is also an important issue for scientists. The topic of SOFC [92] is explored as well.…”