Title: Determination of O-dihydroxybenzene by the Bipyridine Cobalt(II) Complexes Modified Carbon Paste Electrode
Abstract: Brpyridine cobalt(Ⅱ) complex moditied carbon paste electrode(Co-piny/CMCPE) was prepared in the present paper.The experiment results found that the reduction peak current of o-dihydroxybenzene is enhanced catalytically by the Co(Ⅱ) complex modified on the surface of the elecrode.The optimal experimental conditions include the use of phosphate buffer solution(pH 6.4),an accumulation potential of 1.100 V(versus SCE),an accumulation time of 50 s,a scan rate of 0.100 V/s and a second-order derivative linear scan mode.The linear range of determination was 2.0×10-9 ~4.00×10-5 mol/L and detection limit was 1.00×10-9mol/L.The modified electrode was reproducibility and stability.The modified electrode was successfully applied to determine the concentration of o-dihydroxybenzene in the simulation of water samples.
Publication Year: 2009
Publication Date: 2009-01-01
Language: en
Type: article
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