Figure 10.
(A) Details of finger sensor design with a complete electrochemical system: auxiliary, reference and working electrodes. The connection between electrodes and potentiostat was made via flexible conductive wires for on-site detection. (B) Image of the real screen-printed sensing glove. (C–E) Schematic representation of the side views of CSS, PCNB and pretreated sensing layers for index, middle and ring fingers, respectively. The electrochemical signatures and corresponding analytical curves obtained with index, middle and ring fingers of the glove-embedded sensors are shown in (F) through (H,F) DPV for carbendazim detection from 1.0 × 10−7 to 1.0 × 10−6 mol L–1; (G) DPV for diuron detection from 1.0 × 10−7 to 1.0 × 10−6 mol L–1; (H) SW voltammograms for paraquat detection from 1.0× from 1.0 × 10−7 to 1.0 × 10−6 mol L−1 and fenitrothion detection from 1.0 × 10−7 to 1.0 × 10−6 mol L−1. Conditions for the detection: 0.1 mol L−1 phosphate buffer solution, pH 7.0. (I) LSP plot for all pesticides measured with differential pulse and square wave voltammetry, where each voltammogram was converted into a colored dot on the plot. The black bar is only a guide to measure distances between data points. The silhouette coefficient is 0.79. Reprinted with permission from [166] Copyright 2021 Elsevier.