Determination of Sb(V) Using Differential Pulse Anodic Stripping Voltammetry at an Unmodified Edge Plane Pyrolytic Graphite Electrode |
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| Authors: | Min Lu Neil V Rees Richard G Compton |
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| Institution: | Department of Chemistry, Physical and Theoretical Chemistry Laboratory, Oxford Chemistry, South Parks Road, Oxford, OX1 3QZ, UK |
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| Abstract: | Antimony(V) determination at an unmodified edge plane pyrolytic graphite (EPPG) electrode using anodic stripping voltammetry (ASV) by depositing beyond the hydrogen wave is shown in this paper. By depositing beyond the hydrogen wave, we report a sensitive method to determine pentavalent antimony at a carbon electrode in 0.25 M HCl. Using differential pulse anodic stripping voltammetry (DPASV), a bare EPPG electrode gave a detection limit of 5.8±0.02 nM without the need for surface modification. This level is greatly within the EU limit for drinking water of 40 nM. |
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| Keywords: | Antimony(V) Edge plane pyrolytic graphite electrode Anodic stripping voltammetry |
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