Fig. 6From: Poly(4-amino-3-hydroxynaphthalene-1-sulfonic acid) modified glassy carbon electrode for square wave voltammetric determination of amoxicillin in four tablet brandsSWVs of (a) unmodified, and (b) poly(AHNSA)/GCE in pH 5.5 PBS containing 1.0 mmol L−1 AMX: (scan rate: 0.1 V s−1, step potential: 4 mV, amplitude: 25 mV, and frequency: 15 Hz)Back to article page