Abstract
A method for the determination of trace amounts of selenium in hair and flour by differential anodic stripping voltammetry with a gold film electrode was developed. The procedure for the digestion of hair and flour is described. Of the media tested, 0.5 M sulphuric acid was found to be the most suitable. The optimum measuring conditions were found to give the best reproducibility for successive scans and the highest selenium stripping peak. The detection limit was 0.1 µg l–1 of selenium in solution.
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