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Manganese detection in marine sediments: anodic vs. cathodic stripping voltammetry |
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| Authors: | Banks Craig E Kruusma Jaanus Moore Ryan R Tomcík Peter Peters Judith Davis James Komorsky-Lovrić Sebojka Compton Richard G |
| Institution: | a Physical and Theoretical Chemistry Laboratory, Oxford University, South Parks Road, Oxford OX1 3QZ, UK b Environmental Protection Institute of the Estonian, Agricultural University, Akadeemia 4, Tartu 51003, Estonia c Department of Chemistry, School of Biomedical and Molecular Sciences, University of Surrey, Guildford GU2 7XH, UK d Centre for Marine and Environmental Research, “Ruder Boskovic” Institute, Zagreb, Croatia |
| Abstract: | Three different electroanalytical techniques for the detection of manganese in marine sediments are evaluated. The anodic stripping voltammetry of manganese at an in situ bismuth-film-modified boron-doped diamond electrode and cathodic stripping voltammetry at a carbon paste electrode are shown to lack the required sensitivity and reproducibility whereas cathodic stripping voltammetry at a bare boron-doped diamond electrode is shown to be reliable and selective with a limit of detection, from applying a 60 s accumulation period of 7.4 × 10−7 M and a sensitivity of 0.24 A M−1. The method was used to evaluate the manganese content of marine sediments taken from Šibenik, Croatia. |
| Keywords: | Manganese Anodic stripping voltammetry Cathodic stripping voltammetry Bismuth-film electrodes Boron-doped diamond electrodes Marine sediments |
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