Ionic liquid functionalized graphene oxide decorated by gold nanoparticles for electrochemical detection of pirimicarb pesticides |
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| 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
- Download:
- IMEKO-TC19-2022-10.pdf
- DOI:
- 10.21014/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