title: Electrochemical and spectrophotometric study of the behavior of electropolymerized nickel porphyrin films in the determination of nitric oxide in solution.
abstract: We describe in this paper an electrochemical and spectrophotometric study of the behavior of an electropolymerized nickel porphyrin film as a sensor for the determination of nitric oxide (NO) in aqueous solution. Our results show that the anodic oxidation of NO at the modified electrode may not be the result of a catalytic effect induced by the porphyrinic complex. However, the current (measured by differential pulse amperometry) and calculated NO concentration showed a linear relationship in the range 15 nM-6 muM in aerobic phosphate buffer solution (pH 7.4). These results provide a fruitful example of calibration of such electrochemical sensors for the selective detection of NO with a calculated detection limit, at a signal-to-noise ratio of three, equal to 1.5 nM.
authors.forename: S
authors.initials: S
authors.lastname: Trevin
authors.forename: F
authors.initials: F
authors.lastname: Bedioui
authors.forename: J
authors.initials: J
authors.lastname: Devynck