ELECTROCHEMICAL BEHAVIOR OF PARAQUAT ADSORBED ONTO CRYSTALLINE APATITE

  • M.A. EL MHAMMEDI
    EQUIPE D’ELECTROCHIMIE ET DES MATÉRIAUX INORGANIQUES, FACULTÉ DES SCIENCES ET TECHNIQUES, UNIVERSITÉ CADI AYAD, BP 523, BENI MELLAL, MAROC
  • BAKASSE A.
    LABORATOIRE D’ANALYSE DES MICRO-POLLUANTS ORGANIQUES, FACULTÉ DES SCIENCES, UNIVERSITÉ CHOUAIB DOUKKALI
  • CHTAINI A.
    EQUIPE D’ELECTROCHIMIE ET DES MATÉRIAUX INORGANIQUES, FACULTÉ DES SCIENCES ET TECHNIQUES, UNIVERSITÉ CADI AYAD, BP 523, BENI MELLAL, MAROC

Abstract

The carbon paste electrode (CPE) has been used to analyze the electrochemical behavior of paraquat (PQ) adsorbed onto synthesized Ca-hydroxyapatite (HAP) in K2SO4 (0.1M). The cyclic voltammetry results obtained were correlated with square wave voltammetry. The influence of variables such as the concentration of paraquat adsorbed onto apatite (PQ/HAP), and the potential scan rate was tested. X-ray diffraction analysis (XRD), Fourier transformed infrared spectroscopy (FTIR) analysis, and inductively coupled plasma-atomic emission spectrometry (ICP, AES) were used for the characterization of the apatite.

Cuvinte cheie

paraquat hydroxyapatite carbon paste electrode adsorption