Gold Electrode Functionalized with Tridodecylamine for Impedimetric Detection of Acid Orange 10

Abstract

In this work, we focus mainly characterize and develop a new type of impedimetric sensor for the detection of acid orange 10 (AO10: textile dye) which is a toxic element in waters polluted by industrial waste. A siloprene based membrane was chosen, the used ionophore is the tridodecylamine (TDA). The results are interesting because the developed sensor gives a linear response range of concentrations 10-13 M - 10-3 M for acid orange 10 in aqueous medium with a good correlation coefficient of 0.9862 and a low detection limit of 10-13 M, indicating the sensitivity of the sensor overlooked the target element. Ion sensitivity of sensor has been tested for acid orange 10 via methyl blue (MB). A layer of tridodecylamine deposited on gold electrode has been characterized by impedance spectroscopy and cyclic voltammetry methods.

Keywords

• Impedimetric sensor
• Acid orange 10
• Tridodecylamine
• Cyclic voltammetry.