Detection of Dimethoate Pesticide using Layer by Layer Deposition of PDAC/GO on Ag electrode

Tharun K. Ega, Ammar Al-Hamry, Olfa Kanoun, Tamara Lazarevic-Pašti, Danica B. Bogdanović, Igor A. Pašti, Raul D. Rodriguez, Evgeniya Sheremet, Leonardo G. Paterno

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Dimethoate (DMT) is an organophosphate pesticide (OP), which is widely used against insects and mites and their control in agriculture. As other OPs, DMT is also an inhibitor of acetylcholinesterase, which is responsible for the disabling of cholinesterase required for the functioning of the central nervous system. This pesticide can invade living cells of the human body through contact or ingestion. We report an electrochemical sensor based on a layer by layer deposition of PDAC/GO on silver electrodes. The sensor fabrication, physical characterization i.e. Raman spectroscopy and scanning electron microscopy of PDAC/GO based films, and its electrochemical characterization are discussed. The detection of DMT by analyzing electrochemical measurements including cyclic voltammetry and impedance spectroscopy shows that functionalization using layer by layer deposition improves electrochemical response and presents a basis for detection of DMT. The highest response is observed in the case of only one PDAC/GO layer which is attributed to the properly balanced interaction between DMT and PDAC/GO layer, and the increase of electrical resistivity of the PDAC/GO layer with its thickness.

Original languageEnglish
Title of host publication16th International Multi-Conference on Systems, Signals and Devices, SSD 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages621-625
Number of pages5
ISBN (Electronic)9781728118208
DOIs
Publication statusPublished - Mar 2019
Event16th International Multi-Conference on Systems, Signals and Devices, SSD 2019 - Istanbul, Turkey
Duration: 21 Mar 201924 Mar 2019

Publication series

Name16th International Multi-Conference on Systems, Signals and Devices, SSD 2019

Conference

Conference16th International Multi-Conference on Systems, Signals and Devices, SSD 2019
CountryTurkey
CityIstanbul
Period21.3.1924.3.19

Keywords

  • cyclic voltammetry
  • electrochemical sensor
  • graphene oxide
  • impedance spectroscopy
  • Pesticide detection

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Hardware and Architecture
  • Signal Processing
  • Control and Systems Engineering
  • Control and Optimization
  • Instrumentation

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