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Ionic liquid functionalized graphene oxide decorated by gold nanoparticles for electrochemical detection of pirimicarb pesticides

S. Weheabby, A. Al-Hamry, A. E. Deller, J. G. A. Ruthes, R. J. Silva, O. Kanoun
  • Abstract:
    Monitoring pesticide contaminants in diverse environmental systems has become a significant concern. A non-enzymatic electrochemical sensor for pirimicarb pesticide detection has been produced by functionalization of the screen-printed carbon electrodes (SPCE) with graphene oxide, ionic liquid, and gold nanoparticles (GO/IL/AuNps/SPCE). Cyclic voltammetry and electrochemical impedance spectroscopy techniques were applied for the electrochemical characterization of the modified electrode in the presence of [Fe(CN)6]3-/4- as a redox probe. The system showed an exponential response in a concentration range from 50 pM to 500 nM of pirimicarb with a sensitivity of 5.74 × 10 -3 µA pM-1 mm-2 , and the Limit of detection (LOD) is 10.30 pM.
  • Keywords:
    pirimicarb; ionic liquid; gold nanoparticles; SPCE; graphene oxide
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  • DOI:
    tc19-2022.10

Event details:

  • IMEKO TC:
    TC19
  • Event name:
    TC19 Symposium: Metrology on Environmental Instrumentation and Measurements (EnvIMEKO 2022)
  • Title:

    9th EnvIMEKO Symposium of Environmental Instrumentation and Measurements

  • Place:
    La Mans, FRANCE
  • Time:
    02 June 2022 - 03 June 2022