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ELECTROCHEMICAL BEHAVIOR OF PARAQUAT ADSORBED ONTO CRYSTALLINE APATITE


M. A. EL MHAMMEDI1, BAKASSE A. 2, CHTAINI A. 1*
1 EQUIPE D’ELECTROCHIMIE ET DES MATÉRIAUX INORGANIQUES, FACULTÉ DES SCIENCES ET TECHNIQUES, UNIVERSITÉ CADI AYAD, BP 523, BENI MELLAL, MAROC 2 LABORATOIRE D’ANALYSE DES MICRO-POLLUANTS ORGANIQUES, FACULTÉ DES SCIENCES, UNIVERSITÉ CHOUAIB DOUKKALI, BP 20,

Issue:

SCSCC6, Volume VIII, No. 1

Section:

Volume VIII, No. 1 (2007)

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.

Keywords:

paraquat, hydroxyapatite, carbon paste electrode, adsorption.

Code [ID]:

CSCC6200708V01S01A0006 [0001711]

Full paper:

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