The electrochemical pretreatment of aqueous solutions of synthetic surfactants in a diaphragm electrolyzer was used in order to diminish surfactant interference. The determination of cadmium, lead, and copper by stripping voltammetry with a mercury-film electrode in model solutions of cetylpyridinium chloride, sodium lauryl sulfate, and OP-10 was taken as an example. It was found that the reproducibility of anodic peaks of the elements was improved, and the linearity of calibration characteristics was recovered; however, the sensitivity was not always as high as in the blank experiment.
|Number of pages||6|
|Journal||Journal of Analytical Chemistry|
|Publication status||Published - 1997|
ASJC Scopus subject areas
- Analytical Chemistry