Simultaneous Voltammetric Detection of Carbaryl and Paraquat Pesticides on Graphene-Modified Boron-Doped Diamond Electrode

Aniela Pop, Florica Manea, Adriana Flueras, Joop Schoonman

Research output: Contribution to journalArticleScientificpeer-review

17 Citations (Scopus)
61 Downloads (Pure)

Abstract

Monitoring of pesticide residues in food, beverages, and the environment requires fast, versatile, and sensitive analyzing methods. Direct electrochemical detection of pesticides could represent an efficient solution. Adequate electrode material, electrochemical technique, and optimal operation parameters define the detection method for practical application. In this study, cyclic voltammetric and differential pulse voltammetric techniques were used in order to individually and simultaneously detect two pesticides, i.e., carbaryl (CR) and paraquat (PQ), from an acetate buffer solution and also from natural apple juice. A graphene-modified boron-doped diamond electrode, denoted BDDGR, was obtained and successfully applied in the simultaneous detection of CR and PQ pesticides, using the differential pulse voltammetric technique with remarkable electroanalytical parameters in terms of sensitivity: 33.27 μA μM−1 cm−2 for CR and 31.83 μA μM−1 cm−2 for PQ. These outstanding results obtained in the acetate buffer supporting electrolyte allowed us to simultaneously detect the targeted pesticides in natural apple juice.
Original languageEnglish
Article number2033
Number of pages11
JournalSensors
Volume17
Issue number9
DOIs
Publication statusPublished - 2017

Keywords

  • direct electrochemical detection
  • carbaryl
  • paraquat
  • simultaneous detection
  • pesticide residues
  • natural juice

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