publication . Article . 2012

Enhanced host-guest electrochemical recognition of herbicide MCPA using a β-cyclodextrin carbon nanotube sensor.

Jorge Garrido; Jorge Garrido; V. Rahemi; Christopher M.A. Brett; J.J. Vandamme; E. M. P. J. Garrido; E. M. P. J. Garrido; Fernanda Borges;
Open Access
  • Published: 30 May 2012 Journal: Talanta, volume 99, pages 288-293 (issn: 0039-9140, Copyright policy)
  • Publisher: Elsevier BV
Abstract
An electrochemical sensor for the determination of the chlorophenoxy herbicide MCPA has been developed, based on a combination of multi-walled carbon nanotubes with incorporated β-cyclodextrin and a polyaniline film modified glassy carbon electrode. The proposed molecular host-guest recognition based sensor has a high electrochemical sensitivity for the determination of MCPA. The electrochemical behaviour of MCPA at the chemically modified electrode was investigated in detail by cyclic voltammetry. The results indicate that the β-CD/MWCNT modified glassy carbon electrode exhibits efficient electrocatalytic oxidation of MCPA with high sensitivity, stability and l...
Subjects
free text keywords: General Chemistry, Analytical chemistry, Chemically modified electrode, Electrode, Electrochemical gas sensor, Chlorophenoxy herbicide, chemistry.chemical_compound, chemistry, Inorganic chemistry, Polyaniline, Cyclic voltammetry, Beta-Cyclodextrins, MCPA
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