Square Wave Adsorptive Stripping Voltammetric Determination of Cyromazine Insecticide with Multi-Walled Carbon Nanotube Paste Electrode

The electrochemical behavior of cyromazine (N-cyclopropyl-1,3,5-triazine-2,4,6 triamine) insecticide has been studied at newly prepared multi-wall carbon nanotubes paste electrodes using square wave stripping voltammetry. The cyromazine was accumulated at 0.0 mV [vs. Ag/AgCl (3 M NaCl)] and a well-d...

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Bibliographic Details
Published in:Analytical letters 2011-05, Vol.44 (8), p.1392-1404
Main Authors: Mercan, Hülya, İnam, Recai, Aboul-Enein, Hassan Y.
Format: Article
Language:English
Subjects:
Analytical chemistry
Applied sciences
Carbon nanotube paste electrode
Chemistry
Chromatographic methods and physical methods associated with chromatography
Confidence intervals
Cyclic voltammetry
Cyromazine
Electrochemical methods
Electrodes
Environmental analysis
Exact sciences and technology
Global environmental pollution
Insecticides
Mathematical analysis
Other chromatographic methods
Pollution
Recovery
Square wave stripping voltammetry
Square waves
Stripping
Voltammetry
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Summary:The electrochemical behavior of cyromazine (N-cyclopropyl-1,3,5-triazine-2,4,6 triamine) insecticide has been studied at newly prepared multi-wall carbon nanotubes paste electrodes using square wave stripping voltammetry. The cyromazine was accumulated at 0.0 mV [vs. Ag/AgCl (3 M NaCl)] and a well-defined anodic peak obtained at +1110 mV in 0.1 M H 2 SO 4 . The cyclic voltammetric measurements showed an irreversible nature of oxidation wave in the range of scan rates comprised between 500 and 4000 mV s −1 . The calibration curve obtained from square wave stripping voltammetry was linear in the range 0.41 to 83.30 µg/mL with a detection limit of 0.12 µg/mL. The method was applied to the direct determination of cyromazine in natural water samples. Recoveries calculated for river and tap water samples spiked with 10.0 µg/mL level were 101.5 ± 1.9% and 100.6 ± 2.3% at 95% confidence level, respectively. The method was extended to the determination of cyromazine in agrochemical formulation Trigard® with a recovery of 100.49% and accuracy was in agreement with that obtained by HPLC comparison method. Influences of some interfering ions and pesticides were also investigated.
ISSN:0003-2719
1532-236X
DOI:10.1080/00032719.2010.512684