Electrochemical stripping analysis

Electrochemical stripping analysis is a set of analytical chemistry methods based on voltammetry[1] or potentiometry[2] that are used for quantitative determination of ions in solution.

[3] Stripping voltammetry (anodic, cathodic and adsorptive) have been employed for analysis of organic molecules as well as metal ions.

Stripping analysis is an analytical technique that involves (i) preconcentration of a metal phase onto a solid electrode surface or into Hg (liquid) at negative potentials and (ii) selective oxidation of each metal phase species during an anodic potential sweep.

Stripping analysis has the following properties: sensitive and reproducible (RSD<5%) method for trace metal ion analysis in aqueous media, 2) concentration limits of detection for many metals are in the low ppb to high ppt range (S/N=3) and this compares favorably with AAS or ICP analysis, field deployable instrumentation that is inexpensive, approximately 12-15 metal ions can be analyzed by this method.

Anodic stripping voltammetry is a voltammetric method for quantitative determination of specific ionic species.

The last step involves raising the working electrode to a higher potential (anodic), and stripping (oxidizing) the analyte.

Cathodic stripping voltammetry is a voltammetric method for quantitative determination of specific ionic species.