Abstract

We report a sensitive electrochemical voltammetric method for analyzing p-Chloroaniline using a carbon paste electrochemical (CPE) modified by porous material, such Clay (C). P-Chloroaniline strongly adsorbed on a C-CPE surface and provides facile electrochemical quantitative methods for electroactive p-Chloroaniline (p-CA). Operational parameters have been optimized, and the stripping voltammetric performance has been studied using square wave voltammetry. The peaks current intensity are highly linear, with a good sensitivity of C-CPE. These findings can lead to a widespread use of electrochemical sensors to detect chloroaniline contaminates.

Highlights

  • The interest for chloroanilines in the environment is due to their recognised toxicity associated to their ubiquitous diffusion

  • Some literature papers deal with the degradation reactions of p-CA in natural waters but no distinction is made among the possible contributions of sun light irradiation, temperature and bacteria, microbial microorganisms and humic acids present in water [22,23,24]

  • We describe the electrochemical analysis of p-chloroaniline on a clay modified carbon paste electrode

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Summary

Introduction

The interest for chloroanilines in the environment is due to their recognised toxicity associated to their ubiquitous diffusion. The electrochemical oxidation in cyclic voltametry (acetonitrile as the solvent) leads to the formation of dimeric products [11] and evidences the role of the halogen substituents in the electroxidation process [12]. In acetonitrile 4- A undergoes heterolysis and in polar media gives rise to photodechlorination, formation of organic species and of hydrochloride, while nanosecond laser flash photolysis experiments showed the effect of the solvent polarity on the degradation pathway [15].

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