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Determination of Carbendazim by an Ionic Liquid-Modified Carbon Paste Electrode

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Authors
Đorđević, Jelena S.
Maksimović, Vesna
Gadžurić, Slobodan
Trtić-Petrović, Tatjana M.
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Abstract
A new method for the electroanalytical determination of carbendazim is reported using a novel ionic liquid-based carbon paste electrode. 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, and 1-butyl-1-methylpyrrolidinium bis(trifluoromethyl-sulfonyl)imide were used as additives in the paste for electrode fabrication. The electrodes were characterized by cyclic voltammetry of the http://www.w3.org/1999/xlink couple and scanning electron microscopy. The carbon paste electrode containing 19% 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide was selected for the electrochemical determination of carbendazim by differential pulse adsorptive stripping voltammetry. The influence of electrolyte pH, accumulation potential and time, and the presence of selected pesticides on electrochemical behavior of carbendazim were characterized. The optimal conditions for differential pulse adsorptive stripping voltammetr...y of carbendazim were determined to be a pH 5.0 Britton-Robinson buffer, an accumulation potential of -0.05V, an accumulation time of 120s, a start potential of -0.10V vs. the reference; an end potential of +1.30V, and a scan rate of 0.050Vs(-1). The linear dynamic range of the method was from 0.010 to 0.247mgL(-1) with a correlation coefficient of 0.9995. The recovery was 104.1% in fortified tap water, demonstrating its suitability for the analysis of water.

Keywords:
Carbendazim / carbon paste electrodes / differential pulse voltammetry / electrochemistry / ionic liquids
Source:
Analytical Letters, 2017, 50, 7, 1075-1090
Projects:
  • Physics and Chemistry with Ion Beams (RS-45006)

DOI: 10.1080/00032719.2016.1210615

ISSN: 0003-2719 (print); 1532-236X (electronic)

WoS: 000404362800002

Scopus: 2-s2.0-85021328015
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URI
http://vinar.vin.bg.ac.rs/handle/123456789/1623
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