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Carbon Paste Electrodes Modified with Bismuth Film and Walnut Shell Activated Carbon for the Detection of Lead Ions

  • Y. El HamdouniEmail author
  • L. Hermouche
  • J. Mabrouki
  • K. Abbi
  • S. El Hajjaji
  • N. Labjar
Conference paper
  • 30 Downloads
Part of the Advances in Intelligent Systems and Computing book series (AISC, volume 1104)

Abstract

Heavy metals pollution is one of the most severe environmental problems, and that needs any necessary regulations to control it. However, numerous endeavors have been made to create sensors for observing heavy metals in the environment.

In this work, we used the carbon paste electrodes modified with bismuth film and walnut shell activated carbon (AC-CPE) in order to detect the lead ions using cyclic voltammetry (CV), square wave voltammetry (SWV) and electrochemical impedance spectroscopy (EIS). The electrode surface morphology has been characterized by scanning electron microscopy (SEM).

The morphology of the activated carbon showed more void space and higher porosity on its surface. To optimize the electrochemical experimental parameters, many experimental and instrumental variables were investigated.

The results obtained with these conditions are satisfying and we can use it to analyze trace concentration. The calibration plots were linear in the range of 3.02 × 10−6 to 3.02 × 10−8 M, with a limit of detection of 4.03 × 10−9 M. The method showed a good repeatability at 1.66% (n = 3).

Keywords

Electrochemical sensor Lead ions Square wave voltammetry Walnut shell activated carbon Bismuth film 

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Copyright information

© Springer Nature Switzerland AG 2020

Authors and Affiliations

  • Y. El Hamdouni
    • 1
    Email author
  • L. Hermouche
    • 1
  • J. Mabrouki
    • 1
  • K. Abbi
    • 2
  • S. El Hajjaji
    • 1
  • N. Labjar
    • 1
  1. 1.Laboratory of Spectroscopy, Molecular Modeling, Materials, Nanomaterial, Water and Environment, CERNE2D, Faculty of ScienceMohammed V UniversityRabatMorocco
  2. 2.Environmental Materials Team CERNE2D, The High School of Technical EducationMohammed V UniversityRabatMorocco

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