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(a) Chronoamperometric response and (b) calibration curves in the linear frame upon FA addition of the chemosensors based on Pt-1 (a) and Pt-2 electrodes (b). Conditions: working potential 0.0 V vs. Ag/AgCl, working area 12.56 mm2, 20 mM PB, pH 7.0 under continuous stirring at room temperature.
