Cobalt Hexacyanoferrate-Modified Electrode for Amperometric Assay of Hydrazine |
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Authors: | Ravi Shankaran D Sriman Narayanan S |
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Institution: | (1) Department of Analytical Chemistry, University of Madras, Chennai –, 600 025 |
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Abstract: | A graphite electrode modified with cobalt hexacyanoferrate by mechanical immobilization was used for amperometric determination of hydrazine. The modified electrode exhibits good catalytic activity for the oxidation of hydrazine at a reduced overpotential with remarkable sensitivity. The modified electrode showed a linear response for hydrazine in the concentration range of 2.0 × 10–5 to 2.8 × 10–4 M. The detection limit was 9.8 × 10–6 M (S/N = 3). The proposed modified electrode was simple, sensitive, rapid, stable and promising. |
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