Oliveira, Raissa C. deSousa, Camila P.Freire, Tiago M.Freire, Rafael M.Denardin, Juliano C.Fechine, Pierre B. A.Becker, HelenaMorais, SimoneLima-Neto, Pedro deCorreia, Adriana N.2019-09-122019-09-122018Oliveira, R.C. de, Sousa, C.P., Freire, T.M. et al. Anal Bioanal Chem (2018) 410: 7229. https://doi.org/10.1007/s00216-018-1330-1http://hdl.handle.net/10400.22/14572A 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.engBendiocarbMagnetic nanoparticlesNanocompositeChitosanElectrochemical sensorjournal article10.1007/s00216-018-1330-1