Abstract
Stripping voltammetry peaks of an iron solochrome violet complex are shown to be strongly effected by anions present in the sample solution. Chloride and sulphate exhibit different dependencies of the peak height as a function of concentration. They have to be taken into account if the results of iron determinations are to be precise as well as accurate (i.e. the same as those obtained by an independent method). Graphite furnace atomic absorption spectrometry, after extraction of the acetylacetone complex, has been used here for comparison purposes.
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References
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Bard AJ, Faulkner LR (1980) Electrochemical methods, Wiley, New York Chichester Brisbane Toronto Singapore
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Naumann, R., Schmidt, W. & Höhl, G. Determination of iron in high purity materials by adsorptive stripping voltammetry with solochrome violet. Fresenius J Anal Chem 349, 643–645 (1994). https://doi.org/10.1007/BF00323471
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DOI: https://doi.org/10.1007/BF00323471