What is the principle of anodic stripping voltammetry?

Anodic stripping voltammetry is a voltammetric method for quantitative determination of specific ionic species. The analyte of interest is electroplated on the working electrode during a deposition step, and oxidized from the electrode during the stripping step. The current is measured during the stripping step.

For what purpose can anodic stripping voltammetry be used?

Anodic stripping voltammetry has been widely used as an analytical procedure because it has the sensitivity to measure a number of metals of interest (zinc, cadmium, copper, and lead) directly in seawater. Furthermore, the method can be sensitive to the chemical speciation of the metal.

What is meant by stripping voltammetry?

Stripping voltammetry is an electroanalytical technique that involves preconcentration of an analyte on an electrode, followed by a potential sweep to selectively oxidize or reduce the analyte, with the current generated proportional to the amount of analyte present on the electrode.

What is ASV chemistry?

Anodic stripping voltammetry (ASV) is the most common of a class of techniques known as stripping electroanalytical methods (SEAM). The defining characteristic of these methods is the preconcentration of analyte at the electrode surface in order to lower the detection limit for that analyte.

Why is stripping voltammetry so sensitive?

Stripping methods are generally more sensitive than other voltammetric techniques because of a preconcentration step which accumulates the desired analyte on the surface of the electrode.

What is Chronoamperometry used for?

Chronoamperometry is used to study the kinetics of chemical reactions, diffusion processes, and adsorption. In this technique, a potential step is applied to the electrode and the resulting current vs. time is observed.

How does differential pulse voltammetry work?

Differential pulse voltammetry (DPV) is a technique that involves applying amplitude potential pulses on a linear ramp potential. In DPV, a base potential value is chosen at which there is no faradaic reaction and is applied to the electrode. The base potential is increased between pulses with equal increments.

Why is anodic stripping voltammetry sensitive?