Related Experiment Video
Updated: Feb 6, 2026

Author Spotlight: Metallic Nanocomposites to Eliminate Antibiotic-Resistant Bacteria
Published on: October 4, 2024
Chitosan-magnetite nanocomposite as a sensing platform to bendiocarb determination
Raissa C de Oliveira1, Camila P Sousa2, Tiago M Freire1
1Departamento de Química Analítica e Físico-Química, Centro de Ciências, Universidade Federal do Ceará, Bloco 940, Campus do Pici, Pici, Fortaleza, CE, 60440-900, Brazil.
Abstract:
A novel platform for carbamate-based pesticide quantification using a chitosan/magnetic iron oxide (Chit-Fe3O4) nanocomposite as a glassy carbon electrode (GCE) modifier is shown for an analytical methodology for determination of bendiocarb (BND). The BND oxidation signal using GCE/Chit-Fe3O4 compared with bare GCE was catalyzed, showing a 37.5% of current increase with the peak potential towards less positive values, showing method's increased sensitivity and selectivity. Using square-wave voltammetry (SWV), calibration curves for BND determination were obtained (n = 3), and calculated detection and quantification limits values were 2.09 × 10-6 mol L-1 (466.99 ppb) and 6.97 × 10-6 mol L-1 (1555.91 ppb), respectively. The proposed electroanalytical methodology was successfully applied for BND quantification in natural raw waters without any sample pretreatment, proving that the GCE/Chit-Fe3O4 modified electrode showed great potential for BND determination in complex samples. ᅟ Graphical abstract.
Related Concept Videos
The Sense of Self: Reflected Self-Appraisal and Social Comparison
Introduction to Special Senses
Tactile and Chemical Senses
Determining Order of Reaction
Determination
Gene Regulation in Microbial Communities: Quorum Sensing

