Polarographic and Voltammetric Investigation of Sudan I

Main Article Content

Yeliz Karaman
Mustafa Uçar
Necati Menek

Abstract

The voltammetric and polarographic reduction of the 1-phenylazo-2-naphthol (Sudan I) on a hanging mercury drop electrode (HMDE) and static mercury drop electrode (SMDE) has been studied by using several techniques including square-wave voltammetry (SWV), differential pulse polarography (DPP), direct current polarography (DCP) and cyclic voltammetry (CV) in aqueous and ethanolic Britton-Robinson buffer media. The observed shift of the compound reduction peaks to more negative potentials with increasing pH indicates that hydrogen ions are involved in the electrode reaction. The effect of scan rate and pH on the reduction peaks has been studied. From the polarographic and voltammetric data, electrochemical reduction mechanism of the azo dye has been suggested. The reduction of the azo group to amino group in acidic, neutral and basic media was observed

Keywords:
Azo dyes, voltammetry, reduction, reaction mechanism

Article Details

How to Cite
Karaman, Y., Uçar, M., & Menek, N. (2018). Polarographic and Voltammetric Investigation of Sudan I. Chemical Science International Journal, 25(1), 1-12. https://doi.org/10.9734/CSJI/2018/44596
Section
Original Research Article