Voltammetric Determination of Nitronaphthalenes at a Silver Solid Amalgam Electrode

Abstract

Electrodes based on amalgam materials were re-introduced in electroanalytical chemistry in the year 2000, partially as reaction to unsubstantiated public fears of liquid mercury. In this publication, the voltammetric behavior of 1-nitronaphthalene and 2-nitronaphthalene was investigated at a mercury meniscus-modified silver solid amalgam electrode.

The reduction mechanism in mixed neutral buffer-methanol medium includes the four-electron reduction to hydroxylaminoderivative followed by a two-electron reduction to the amine in acidic medium, similarly to mercury electrodes.

Keywords

• cyclic voltammetry
• differential pulse voltammetry
• elimination voltammetry with linear scan
• 1-nitronaphthalene
• 2-nitronaphthalene
• silver solid amalgam electrode
• solid phase extraction