Voltammetric Detection of Trace Elements in Various Biological Matrices

The purpose of this work is to analyse Cu, Zn, Pb and Cd simultaneously in biological samples such as serum, hair, tooth and bone using differential pulse stripping voltammetry (DPSV). Therefore, suitable sample preparation and experimental conditions are determined. Trace metal concentrations of biological samples are measured and compared with the literature values. Cu, Zn and Pb are found in hair, tooth and bone samples while Cu and Zn metals is found in serum sample.

Application of 1,2,3-Benzotriazole as Corrosion Inhibitor for Mild Steel in Sulphuric Acid Medium at Different Temperature

Corrosion inhibition property of 1,2,3-benzotriazole for mild steel in 0.1 N sulphuric acid was evaluated at different concentrations and temperatures using weight loss, electrochemical polarization, differential pulse, stripping voltammetry and impedance spectroscopy. The surface study was carried out using metallurgical research and SEM microscopy. Increase in Warburg impedance and capacitive current and decrease in Faradaic current and capacitive loop was observed with increase in concentration of inhibitor. 1,2,3-Benzotriazole was found as a best corrosion inhibitor (94 %) for mild steel as compared to other inhibitors suggesting 1,2,3-benzotriazole as a potential alternate corrosion inhibitor for mild steel in H2SO4.

Determination of chromium(iii) by differential pulse stripping voltammetry at a chitosan–gold nanocomposite modified screen printed electrode

Detection of trivalent chromium with screen printed electrodes modified by chitosan–gold nanocomposites using differential pulse voltammetry (DPSV), showing a linear range from 1 to 100 μM and a detection limit of 0.4 μM (based on 3σ).