Determination of dissolved manganese in natural waters by differential pulse cathodic stripping voltammetry |
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Authors: | Ján Labuda Mária Vaníčková Ernest Beinrohr |
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Affiliation: | (1) Department of Analytical Chemistry, Slovak Technical University, Radlinského 9, CS-812 37 Bratislava, Czechoslovakia |
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Abstract: | A procedure based on differential pulse cathodic stripping voltammetry on the graphite electrode is described for the determination of dissolved manganese in natural waters buffered at pH about 6.5 with acetate solution. In order to avoid interference of iron(II) the addition of fluoride is used. The limit of detection is 3 g/l for a deposition time of 6 min. Acidification and UV-irradiation are recommended for samples containing dissolved organic matter. Results of manganese determination in table mineral waters are reported and the possibility of manganese speciation is discussed. |
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Keywords: | manganese determination natural waters analysis differential pulse cathodic stripping voltammetry |
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