Electrooxidative Polymerization of Methylene Blue on Screen Printed Carbon Paste Electrode and Its Application in NADH Determination

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Abstract:

The electropolymerization of methylene blue (MB) from the phenothiazine group on screen printed carbon paste electrode (SPCE) has been successfully studied using repeated potential cycling. The characteristics of the modified electrodes were influenced by several experimental conditions such as MB concentration, scan rate, scanning range and number of cyclic scans. The catalytic properties of the modified electrodes allowed NADH oxidation at a lower potential of +0.08 V versus Ag/AgCl. The resulting modified electrodes also exhibited a linear response towards NADH in the concentration range of 10 to 100 μM with the detection limit of 10 μM.

Keywords: ELECTROPOLYMERIZATION; METHYLENE BLUE; MODIFIED SPCE; NADH

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/sl.2011.1706

Publication date: October 1, 2011

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