Stripping voltammetry:

Problem:

Why can stripping voltammetry be applied to only a very small number of organic compounds?

Answer:

Most organic compounds do not form insoluble electrode products. Most organic compounds are soluble at these high dilution trace levels. Many of those organic electrode products that are insoluble cannot be reoxidised or reduced to form a stripping peak, or the insoluble layer is insufficiently coherent. The most common type of organic compound to which stripping analysis can be applied are those containing a thiol group.