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- W2071567433 abstract "Abstract We report here a simple, selective and sensitive method for the determination of NADH in neutral aqueous solution by using an electrochemically preanodized screen printed carbon electrode (SPCE*) without the addition of any redox mediator. The preanodization procedure makes the SPCE more electroactive towards NADH oxidation with a decrease of ∼300 mV in the overpotential without electrode fouling. It is proposed that surface reorientation to generate more edge plane sites during the preanodization procedure, as confirmed by a distinctive Raman band at ∼1360 cm−1, is the main cause for the facilitated electron transfer for the oxidation of NADH. Presence of large excess of ascorbic acid does not interfere the detection of NADH and the SPCE* shows individual voltammetric peaks for ascorbic acid and NADH. Under optimized conditions, the obtained calibration plot shows a linear range up to 100 μM with a detection limit (S/N = 3) of 157 nM by flow injection analysis." @default.
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- W2071567433 date "2007-05-01" @default.
- W2071567433 modified "2023-10-18" @default.
- W2071567433 title "Mediatorless catalytic oxidation of NADH at a disposable electrochemical sensor" @default.
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- W2071567433 doi "https://doi.org/10.1016/j.snb.2006.10.012" @default.
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